231204012651 has 12 divisors (see below), whose sum is σ = 334027067712. Its totient is φ = 154105677936.

The previous prime is 231204012643. The next prime is 231204012659. The reversal of 231204012651 is 156210402132.

231204012651 is a `hidden beast` number, since 2 + 3 + 1 + 2 + 0 + 4 + 0 + 1 + 2 + 651 = 666.

It is an interprime number because it is at equal distance from previous prime (231204012643) and next prime (231204012659).

It is not a de Polignac number, because 231204012651 - 2³ = 231204012643 is a prime.

It is not an unprimeable number, because it can be changed into a prime (231204012659) 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, 2479216 + ... + 2570781.

It is an arithmetic number, because the mean of its divisors is an integer number (27835588976).

Almost surely, 2^231204012651 is an apocalyptic number.

231204012651 is a deficient number, since it is larger than the sum of its proper divisors (102823055061).

231204012651 is a wasteful number, since it uses less digits than its factorization.

231204012651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5055090 (or 5055087 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

Adding to 231204012651 its reverse (156210402132), we get a palindrome (387414414783).

The spelling of 231204012651 in words is "two hundred thirty-one billion, two hundred four million, twelve thousand, six hundred fifty-one".