31857404854 has 24 divisors (see below), whose sum is σ = 53577355608. Its totient is φ = 14089256640.

The previous prime is 31857404827. The next prime is 31857404863. The reversal of 31857404854 is 45840475813.

It is a super-2 number, since 2×31857404854² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31857404798 and 31857404807.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 498759 + ... + 558994.

It is an arithmetic number, because the mean of its divisors is an integer number (2232389817).

Almost surely, 2^31857404854 is an apocalyptic number.

31857404854 is a deficient number, since it is larger than the sum of its proper divisors (21719950754).

31857404854 is a wasteful number, since it uses less digits than its factorization.

31857404854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1057840 (or 1057803 counting only the distinct ones).

The product of its (nonzero) digits is 2150400, while the sum is 49.

The spelling of 31857404854 in words is "thirty-one billion, eight hundred fifty-seven million, four hundred four thousand, eight hundred fifty-four".