231451052013 has 12 divisors (see below), whose sum is σ = 334389062748. Its totient is φ = 154267989120.

The previous prime is 231451052009. The next prime is 231451052029. The reversal of 231451052013 is 310250154132.

231451052013 is a `hidden beast` number, since 2 + 3 + 1 + 451 + 0 + 5 + 201 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 111677609124 + 119773442889 = 334182^2 + 346083^2 .

It is not a de Polignac number, because 231451052013 - 2² = 231451052009 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231451052113) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2681170 + ... + 2766147.

It is an arithmetic number, because the mean of its divisors is an integer number (27865755229).

Almost surely, 2^231451052013 is an apocalyptic number.

It is an amenable number.

231451052013 is a deficient number, since it is larger than the sum of its proper divisors (102938010735).

231451052013 is a wasteful number, since it uses less digits than its factorization.

231451052013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5452044 (or 5452041 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The spelling of 231451052013 in words is "two hundred thirty-one billion, four hundred fifty-one million, fifty-two thousand, thirteen".