31401123412 has 24 divisors (see below), whose sum is σ = 56786681952. Its totient is φ = 15183588000.

The previous prime is 31401123373. The next prime is 31401123443. The reversal of 31401123412 is 21432110413.

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, 886414 + ... + 921157.

It is an arithmetic number, because the mean of its divisors is an integer number (2366111748).

Almost surely, 2^31401123412 is an apocalyptic number.

It is an amenable number.

31401123412 is a deficient number, since it is larger than the sum of its proper divisors (25385558540).

31401123412 is a wasteful number, since it uses less digits than its factorization.

31401123412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1807719 (or 1807717 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 31401123412 its reverse (21432110413), we get a palindrome (52833233825).

The spelling of 31401123412 in words is "thirty-one billion, four hundred one million, one hundred twenty-three thousand, four hundred twelve".