31234305512 has 8 divisors (see below), whose sum is σ = 58564322850. Its totient is φ = 15617152752.

The previous prime is 31234305511. The next prime is 31234305539. The reversal of 31234305512 is 21550343213.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 26287433956 + 4946871556 = 162134^2 + 70334^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (31234305511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1952144087 + ... + 1952144102.

Almost surely, 2^31234305512 is an apocalyptic number.

It is an amenable number.

31234305512 is a deficient number, since it is larger than the sum of its proper divisors (27330017338).

31234305512 is a wasteful number, since it uses less digits than its factorization.

31234305512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3904288195 (or 3904288191 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 29.

Adding to 31234305512 its reverse (21550343213), we get a palindrome (52784648725).

The spelling of 31234305512 in words is "thirty-one billion, two hundred thirty-four million, three hundred five thousand, five hundred twelve".