231205082421256 has 16 divisors (see below), whose sum is σ = 433557383691600. Its totient is φ = 115589780103504.

The previous prime is 231205082421151. The next prime is 231205082421281. The reversal of 231205082421256 is 652124280502132.

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, 1595061390 + ... + 1595206333.

It is an arithmetic number, because the mean of its divisors is an integer number (27097336480725).

Almost surely, 2^{231205082421256} is an apocalyptic number.

It is an amenable number.

231205082421256 is a deficient number, since it is larger than the sum of its proper divisors (202352301270344).

231205082421256 is a wasteful number, since it uses less digits than its factorization.

231205082421256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3190276788 (or 3190276784 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 43.

The spelling of 231205082421256 in words is "two hundred thirty-one trillion, two hundred five billion, eighty-two million, four hundred twenty-one thousand, two hundred fifty-six".