31130312111312 has 10 divisors (see below), whose sum is σ = 60314979715698. Its totient is φ = 15565156055648.

The previous prime is 31130312111299. The next prime is 31130312111401. The reversal of 31130312111312 is 21311121303113.

It can be written as a sum of positive squares in only one way, i.e., 30939136791616 + 191175319696 = 5562296^2 + 437236^2 .

It is a super-5 number, since 5×31130312111312⁵ (a number of 69 digits) contains 55555 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 972822253463 + ... + 972822253494.

Almost surely, 2^{31130312111312} is an apocalyptic number.

It is an amenable number.

31130312111312 is a deficient number, since it is larger than the sum of its proper divisors (29184667604386).

31130312111312 is a wasteful number, since it uses less digits than its factorization.

31130312111312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1945644506965 (or 1945644506959 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 23.

Adding to 31130312111312 its reverse (21311121303113), we get a palindrome (52441433414425).

The spelling of 31130312111312 in words is "thirty-one trillion, one hundred thirty billion, three hundred twelve million, one hundred eleven thousand, three hundred twelve".