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1230031125 = 32534347541
BaseRepresentation
bin100100101010000…
…1100100100010101
310011201112001111100
41021110030210111
510004341444000
6322015500313
742324043401
oct11124144425
93151461440
101230031125
11581358654
122a3b27699
13167aaa68b
14b950a101
1572ebda00
hex4950c915

1230031125 has 96 divisors (see below), whose sum is σ = 2321459712. Its totient is φ = 625968000.

The previous prime is 1230031111. The next prime is 1230031133. The reversal of 1230031125 is 5211300321.

It is not a de Polignac number, because 1230031125 - 210 = 1230030101 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1230031098 and 1230031107.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2273355 + ... + 2273895.

It is an arithmetic number, because the mean of its divisors is an integer number (24181872).

Almost surely, 21230031125 is an apocalyptic number.

1230031125 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1230031125 is a deficient number, since it is larger than the sum of its proper divisors (1091428587).

1230031125 is a wasteful number, since it uses less digits than its factorization.

1230031125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 652 (or 639 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 1230031125 is about 35071.7995688844. The cubic root of 1230031125 is about 1071.4503071781.

Adding to 1230031125 its reverse (5211300321), we get a palindrome (6441331446).

The spelling of 1230031125 in words is "one billion, two hundred thirty million, thirty-one thousand, one hundred twenty-five".

Divisors: 1 3 5 9 15 25 43 45 47 75 125 129 141 215 225 235 375 387 423 541 645 705 1075 1125 1175 1623 1935 2021 2115 2705 3225 3525 4869 5375 5875 6063 8115 9675 10105 10575 13525 16125 17625 18189 23263 24345 25427 30315 40575 48375 50525 52875 67625 69789 76281 90945 116315 121725 127135 151575 202875 209367 228843 252625 348945 381405 454725 581575 608625 635675 757875 1046835 1093361 1144215 1744725 1907025 2273625 2907875 3178375 3280083 5234175 5466805 5721075 8723625 9535125 9840249 16400415 26170875 27334025 28605375 49201245 82002075 136670125 246006225 410010375 1230031125