31130312312 has 32 divisors (see below), whose sum is σ = 63727337520. Its totient is φ = 14138653440.

The previous prime is 31130312303. The next prime is 31130312321. The reversal of 31130312312 is 21321303113.

It is an interprime number because it is at equal distance from previous prime (31130312303) and next prime (31130312321).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34133 + ... + 251844.

Almost surely, 2^31130312312 is an apocalyptic number.

It is an amenable number.

31130312312 is an abundant number, since it is smaller than the sum of its proper divisors (32597025208).

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

31130312312 is a wasteful number, since it uses less digits than its factorization.

31130312312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287231 (or 287227 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 31130312312 its reverse (21321303113), we get a palindrome (52451615425).

The spelling of 31130312312 in words is "thirty-one billion, one hundred thirty million, three hundred twelve thousand, three hundred twelve".