31113312230 has 128 divisors (see below), whose sum is σ = 75280859136. Its totient is φ = 8941363200.

The previous prime is 31113312227. The next prime is 31113312259. The reversal of 31113312230 is 3221331113.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 14723654 + ... + 14725766.

It is an arithmetic number, because the mean of its divisors is an integer number (588131712).

Almost surely, 2^31113312230 is an apocalyptic number.

31113312230 is an abundant number, since it is smaller than the sum of its proper divisors (44167546906).

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

31113312230 is a wasteful number, since it uses less digits than its factorization.

31113312230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3622.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 31113312230 its reverse (3221331113), we get a palindrome (34334643343).

It can be divided in two parts, 31113 and 312230, that added together give a palindrome (343343).

The spelling of 31113312230 in words is "thirty-one billion, one hundred thirteen million, three hundred twelve thousand, two hundred thirty".