31213403034 has 32 divisors (see below), whose sum is σ = 71686287360. Its totient is φ = 8960785200.

The previous prime is 31213403021. The next prime is 31213403077. The reversal of 31213403034 is 43030431213.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 31213402995 and 31213403013.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12444282 + ... + 12446789.

It is an arithmetic number, because the mean of its divisors is an integer number (2240196480).

Almost surely, 2^31213403034 is an apocalyptic number.

31213403034 is an abundant number, since it is smaller than the sum of its proper divisors (40472884326).

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

31213403034 is a wasteful number, since it uses less digits than its factorization.

31213403034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24891106.

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 31213403034 its reverse (43030431213), we get a palindrome (74243834247).

The spelling of 31213403034 in words is "thirty-one billion, two hundred thirteen million, four hundred three thousand, thirty-four".