70516931 has 4 divisors (see below), whose sum is σ = 72422832. Its totient is φ = 68611032.

The previous prime is 70516903. The next prime is 70516937. The reversal of 70516931 is 13961507.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13961507 = 7 ⋅1994501.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70516931 is a prime.

It is a super-2 number, since 2×70516931² = 9945275115317522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70516937) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 952895 + ... + 952968.

It is an arithmetic number, because the mean of its divisors is an integer number (18105708).

Almost surely, 2^70516931 is an apocalyptic number.

70516931 is a deficient number, since it is larger than the sum of its proper divisors (1905901).

70516931 is a wasteful number, since it uses less digits than its factorization.

70516931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1905900.

The product of its (nonzero) digits is 5670, while the sum is 32.

The square root of 70516931 is about 8397.4359777256. The cubic root of 70516931 is about 413.1405287187.

The spelling of 70516931 in words is "seventy million, five hundred sixteen thousand, nine hundred thirty-one".