19931231612 has 24 divisors (see below), whose sum is σ = 35388057600. Its totient is φ = 9820494320.

The previous prime is 19931231603. The next prime is 19931231633. The reversal of 19931231612 is 21613213991.

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, 610889 + ... + 642687.

It is an arithmetic number, because the mean of its divisors is an integer number (1474502400).

Almost surely, 2^19931231612 is an apocalyptic number.

It is an amenable number.

19931231612 is a deficient number, since it is larger than the sum of its proper divisors (15456825988).

19931231612 is a wasteful number, since it uses less digits than its factorization.

19931231612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34081 (or 34079 counting only the distinct ones).

The product of its digits is 17496, while the sum is 38.

The spelling of 19931231612 in words is "nineteen billion, nine hundred thirty-one million, two hundred thirty-one thousand, six hundred twelve".