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231074125 = 531848593
BaseRepresentation
bin11011100010111…
…10100101001101
3121002210210002221
431301132211031
5433123333000
634532415341
75504045332
oct1561364515
9532723087
10231074125
11109487457
1265477551
1338b47169
1422990989
151544661a
hexdc5e94d

231074125 has 8 divisors (see below), whose sum is σ = 288380664. Its totient is φ = 184859200.

The previous prime is 231074101. The next prime is 231074141. The reversal of 231074125 is 521470132.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 125316 + 230948809 = 354^2 + 15197^2 .

It is not a de Polignac number, because 231074125 - 221 = 228976973 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 231074125.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 924172 + ... + 924421.

It is an arithmetic number, because the mean of its divisors is an integer number (36047583).

Almost surely, 2231074125 is an apocalyptic number.

231074125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

231074125 is a deficient number, since it is larger than the sum of its proper divisors (57306539).

231074125 is an equidigital number, since it uses as much as digits as its factorization.

231074125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1848608 (or 1848598 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 231074125 is about 15201.1224914478. The cubic root of 231074125 is about 613.6448669063.

The spelling of 231074125 in words is "two hundred thirty-one million, seventy-four thousand, one hundred twenty-five".

Divisors: 1 5 25 125 1848593 9242965 46214825 231074125