231257071830 has 64 divisors (see below), whose sum is σ = 556446578688. Its totient is φ = 61509859200.

The previous prime is 231257071817. The next prime is 231257071841. The reversal of 231257071830 is 38170752132.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34507480 + ... + 34514180.

It is an arithmetic number, because the mean of its divisors is an integer number (8694477792).

Almost surely, 2^231257071830 is an apocalyptic number.

231257071830 is an abundant number, since it is smaller than the sum of its proper divisors (325189506858).

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

231257071830 is a wasteful number, since it uses less digits than its factorization.

231257071830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9501.

The product of its (nonzero) digits is 70560, while the sum is 39.

The spelling of 231257071830 in words is "two hundred thirty-one billion, two hundred fifty-seven million, seventy-one thousand, eight hundred thirty".