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1230022131 = 313171855237
BaseRepresentation
bin100100101010000…
…1010010111110011
310011201111121011020
41021110022113303
510004341202011
6322015350523
742324005232
oct11124122763
93151447136
101230022131
11581351918
122a3b22443
13167aa6560
14b9506b19
1572ebb006
hex4950a5f3

1230022131 has 16 divisors (see below), whose sum is σ = 1870079904. Its totient is φ = 712410624.

The previous prime is 1230022111. The next prime is 1230022141. The reversal of 1230022131 is 1312200321.

It is not a de Polignac number, because 1230022131 - 29 = 1230021619 is a prime.

It is a super-3 number, since 3×12300221313 (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 1230022131.

It is not an unprimeable number, because it can be changed into a prime (1230022111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 926956 + ... + 928281.

It is an arithmetic number, because the mean of its divisors is an integer number (116879994).

Almost surely, 21230022131 is an apocalyptic number.

1230022131 is a deficient number, since it is larger than the sum of its proper divisors (640057773).

1230022131 is a wasteful number, since it uses less digits than its factorization.

1230022131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1855270.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1230022131 is about 35071.6713459738. The cubic root of 1230022131 is about 1071.4476956866.

Adding to 1230022131 its reverse (1312200321), we get a palindrome (2542222452).

The spelling of 1230022131 in words is "one billion, two hundred thirty million, twenty-two thousand, one hundred thirty-one".

Divisors: 1 3 13 17 39 51 221 663 1855237 5565711 24118081 31539029 72354243 94617087 410007377 1230022131