31838612004 has 60 divisors (see below), whose sum is σ = 83743188144. Its totient is φ = 10547743536.

The previous prime is 31838611997. The next prime is 31838612009. The reversal of 31838612004 is 40021683813.

31838612004 is a `hidden beast` number, since 3 + 1 + 8 + 38 + 612 + 0 + 0 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 31838612004.

It is not an unprimeable number, because it can be changed into a prime (31838612009) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 248622 + ... + 354245.

Almost surely, 2^31838612004 is an apocalyptic number.

It is an amenable number.

31838612004 is an abundant number, since it is smaller than the sum of its proper divisors (51904576140).

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

31838612004 is a wasteful number, since it uses less digits than its factorization.

31838612004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 603046 (or 603035 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The spelling of 31838612004 in words is "thirty-one billion, eight hundred thirty-eight million, six hundred twelve thousand, four".