31516836914 has 4 divisors (see below), whose sum is σ = 47275255374. Its totient is φ = 15758418456.

The previous prime is 31516836823. The next prime is 31516836931. The reversal of 31516836914 is 41963861513.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 24446886025 + 7069950889 = 156355^2 + 84083^2 .

It is a super-2 number, since 2×31516836914² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7879209227 + ... + 7879209230.

Almost surely, 2^31516836914 is an apocalyptic number.

31516836914 is a deficient number, since it is larger than the sum of its proper divisors (15758418460).

31516836914 is a wasteful number, since it uses less digits than its factorization.

31516836914 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15758418459.

The product of its digits is 466560, while the sum is 47.

The spelling of 31516836914 in words is "thirty-one billion, five hundred sixteen million, eight hundred thirty-six thousand, nine hundred fourteen".