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231064025 = 5229893581
BaseRepresentation
bin11011100010111…
…00000111011001
3121002210021020212
431301130013121
5433123022100
634532300505
75504004023
oct1561340731
9532707225
10231064025
1110947a905
1265471735
1338b4269a
142298b013
1515443635
hexdc5c1d9

231064025 has 24 divisors (see below), whose sum is σ = 299813400. Its totient is φ = 176422400.

The previous prime is 231064007. The next prime is 231064037. The reversal of 231064025 is 520460132.

It can be written as a sum of positive squares in 12 ways, for example, as 46185616 + 184878409 = 6796^2 + 13597^2 .

It is not a de Polignac number, because 231064025 - 26 = 231063961 is a prime.

It is a super-3 number, since 3×2310640253 (a number of 26 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 62735 + ... + 66315.

It is an arithmetic number, because the mean of its divisors is an integer number (12492225).

Almost surely, 2231064025 is an apocalyptic number.

231064025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

231064025 is a deficient number, since it is larger than the sum of its proper divisors (68749375).

231064025 is a wasteful number, since it uses less digits than its factorization.

231064025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3709 (or 3704 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 231064025 is about 15200.7902755087. The cubic root of 231064025 is about 613.6359261916.

The spelling of 231064025 in words is "two hundred thirty-one million, sixty-four thousand, twenty-five".

Divisors: 1 5 25 29 89 145 445 725 2225 2581 3581 12905 17905 64525 89525 103849 318709 519245 1593545 2596225 7967725 9242561 46212805 231064025