31012535412 has 36 divisors (see below), whose sum is σ = 78484136640. Its totient is φ = 10325467152.

The previous prime is 31012535399. The next prime is 31012535419. The reversal of 31012535412 is 21453521013.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31012535419) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 470508 + ... + 532355.

Almost surely, 2^31012535412 is an apocalyptic number.

It is an amenable number.

31012535412 is an abundant number, since it is smaller than the sum of its proper divisors (47471601228).

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

31012535412 is a wasteful number, since it uses less digits than its factorization.

31012535412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1003732 (or 1003727 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The spelling of 31012535412 in words is "thirty-one billion, twelve million, five hundred thirty-five thousand, four hundred twelve".