31520013314 has 8 divisors (see below), whose sum is σ = 47283316860. Its totient is φ = 15758907696.

The previous prime is 31520013299. The next prime is 31520013331. The reversal of 31520013314 is 41331002513.

It can be written as a sum of positive squares in 2 ways, for example, as 31110962689 + 409050625 = 176383^2 + 20225^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×31520013314² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31520013314.

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, 513149 + ... + 571280.

Almost surely, 2^31520013314 is an apocalyptic number.

31520013314 is a deficient number, since it is larger than the sum of its proper divisors (15763303546).

31520013314 is a wasteful number, since it uses less digits than its factorization.

31520013314 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1098964.

The product of its (nonzero) digits is 1080, while the sum is 23.

Adding to 31520013314 its reverse (41331002513), we get a palindrome (72851015827).

The spelling of 31520013314 in words is "thirty-one billion, five hundred twenty million, thirteen thousand, three hundred fourteen".