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231012052 = 2270981457
BaseRepresentation
bin11011100010011…
…11011011010100
3121002200121221221
431301033123110
5433114341202
634531220124
75503366345
oct1561173324
9532617857
10231012052
11109444857
1265447644
1338b24b2b
14229760cc
1515433037
hexdc4f6d4

231012052 has 12 divisors (see below), whose sum is σ = 404846260. Its totient is φ = 115341696.

The previous prime is 231012043. The next prime is 231012071. The reversal of 231012052 is 250210132.

It can be written as a sum of positive squares in 2 ways, for example, as 34058896 + 196953156 = 5836^2 + 14034^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37893 + ... + 43564.

Almost surely, 2231012052 is an apocalyptic number.

It is an amenable number.

231012052 is a deficient number, since it is larger than the sum of its proper divisors (173834208).

231012052 is a wasteful number, since it uses less digits than its factorization.

231012052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82170 (or 82168 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 231012052 is about 15199.0806300908. The cubic root of 231012052 is about 613.5899145700.

Adding to 231012052 its reverse (250210132), we get a palindrome (481222184).

The spelling of 231012052 in words is "two hundred thirty-one million, twelve thousand, fifty-two".

Divisors: 1 2 4 709 1418 2836 81457 162914 325828 57753013 115506026 231012052