31120023112 has 8 divisors (see below), whose sum is σ = 58350043350. Its totient is φ = 15560011552.

The previous prime is 31120023083. The next prime is 31120023127. The reversal of 31120023112 is 21132002113.

It can be written as a sum of positive squares in only one way, i.e., 27359144836 + 3760878276 = 165406^2 + 61326^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1945001437 + ... + 1945001452.

Almost surely, 2^31120023112 is an apocalyptic number.

It is an amenable number.

31120023112 is a deficient number, since it is larger than the sum of its proper divisors (27230020238).

31120023112 is a wasteful number, since it uses less digits than its factorization.

31120023112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3890002895 (or 3890002891 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 31120023112 its reverse (21132002113), we get a palindrome (52252025225).

The spelling of 31120023112 in words is "thirty-one billion, one hundred twenty million, twenty-three thousand, one hundred twelve".