31475338892 has 6 divisors (see below), whose sum is σ = 55081843068. Its totient is φ = 15737669444.

The previous prime is 31475338883. The next prime is 31475338897. The reversal of 31475338892 is 29883357413.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (31475338897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3934417358 + ... + 3934417365.

It is an arithmetic number, because the mean of its divisors is an integer number (9180307178).

Almost surely, 2^31475338892 is an apocalyptic number.

It is an amenable number.

31475338892 is a deficient number, since it is larger than the sum of its proper divisors (23606504176).

31475338892 is a wasteful number, since it uses less digits than its factorization.

31475338892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7868834727 (or 7868834725 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 53.

The spelling of 31475338892 in words is "thirty-one billion, four hundred seventy-five million, three hundred thirty-eight thousand, eight hundred ninety-two".