31213310234 has 16 divisors (see below), whose sum is σ = 47558582016. Its totient is φ = 15360840000.

The previous prime is 31213310129. The next prime is 31213310237. The reversal of 31213310234 is 43201331213.

It is not an unprimeable number, because it can be changed into a prime (31213310237) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63959 + ... + 257909.

It is an arithmetic number, because the mean of its divisors is an integer number (2972411376).

Almost surely, 2^31213310234 is an apocalyptic number.

31213310234 is a deficient number, since it is larger than the sum of its proper divisors (16345271782).

31213310234 is a wasteful number, since it uses less digits than its factorization.

31213310234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195221.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 31213310234 its reverse (43201331213), we get a palindrome (74414641447).

The spelling of 31213310234 in words is "thirty-one billion, two hundred thirteen million, three hundred ten thousand, two hundred thirty-four".