31234403012 has 36 divisors (see below), whose sum is σ = 57928488156. Its totient is φ = 14733688320.

The previous prime is 31234402981. The next prime is 31234403033. The reversal of 31234403012 is 21030443213.

It can be written as a sum of positive squares in 2 ways, for example, as 24415937536 + 6818465476 = 156256^2 + 82574^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 303128 + ... + 392880.

It is an arithmetic number, because the mean of its divisors is an integer number (1609124671).

Almost surely, 2^31234403012 is an apocalyptic number.

It is an amenable number.

31234403012 is a deficient number, since it is larger than the sum of its proper divisors (26694085144).

31234403012 is a wasteful number, since it uses less digits than its factorization.

31234403012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90036 (or 90015 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 31234403012 its reverse (21030443213), we get a palindrome (52264846225).

The spelling of 31234403012 in words is "thirty-one billion, two hundred thirty-four million, four hundred three thousand, twelve".