231305012136630 has 24 divisors (see below), whose sum is σ = 601393031555472. Its totient is φ = 61681336569744.

The previous prime is 231305012136587. The next prime is 231305012136631. The reversal of 231305012136630 is 36631210503132.

231305012136630 is a `hidden beast` number, since 2 + 3 + 1 + 3 + 0 + 5 + 0 + 1 + 2 + 13 + 6 + 630 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231305012136631) 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, 1285027845114 + ... + 1285027845293.

It is an arithmetic number, because the mean of its divisors is an integer number (25058042981478).

Almost surely, 2^{231305012136630} is an apocalyptic number.

231305012136630 is an abundant number, since it is smaller than the sum of its proper divisors (370088019418842).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231305012136630 is a wasteful number, since it uses less digits than its factorization.

231305012136630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2570055690420 (or 2570055690417 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 36.

Adding to 231305012136630 its reverse (36631210503132), we get a palindrome (267936222639762).

The spelling of 231305012136630 in words is "two hundred thirty-one trillion, three hundred five billion, twelve million, one hundred thirty-six thousand, six hundred thirty".