231312320310 has 96 divisors (see below), whose sum is σ = 581053852512. Its totient is φ = 58897722880.

The previous prime is 231312320273. The next prime is 231312320329. The reversal of 231312320310 is 13023213132.

It is a super-2 number, since 2×231312320310² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2674504 + ... + 2759636.

It is an arithmetic number, because the mean of its divisors is an integer number (6052644297).

Almost surely, 2^231312320310 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231312320310, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (290526926256).

231312320310 is an abundant number, since it is smaller than the sum of its proper divisors (349741532202).

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

231312320310 is a wasteful number, since it uses less digits than its factorization.

231312320310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85278 (or 85231 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 231312320310 its reverse (13023213132), we get a palindrome (244335533442).

The spelling of 231312320310 in words is "two hundred thirty-one billion, three hundred twelve million, three hundred twenty thousand, three hundred ten".