31420133564 has 12 divisors (see below), whose sum is σ = 55142787000. Its totient is φ = 15665051568.

The previous prime is 31420133519. The next prime is 31420133573. The reversal of 31420133564 is 46533102413.

It is a self number, because there is not a number n which added to its sum of digits gives 31420133564.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11252234 + ... + 11255025.

It is an arithmetic number, because the mean of its divisors is an integer number (4595232250).

Almost surely, 2^31420133564 is an apocalyptic number.

It is an amenable number.

31420133564 is a deficient number, since it is larger than the sum of its proper divisors (23722653436).

31420133564 is a wasteful number, since it uses less digits than its factorization.

31420133564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22507612 (or 22507610 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 32.

Adding to 31420133564 its reverse (46533102413), we get a palindrome (77953235977).

The spelling of 31420133564 in words is "thirty-one billion, four hundred twenty million, one hundred thirty-three thousand, five hundred sixty-four".