980691931 has 4 divisors (see below), whose sum is σ = 995329192. Its totient is φ = 966054672.

The previous prime is 980691911. The next prime is 980691947. The reversal of 980691931 is 139196089.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 139196089 = 89 ⋅1564001.

It is a cyclic number.

It is not a de Polignac number, because 980691931 - 2²⁷ = 846474203 is a prime.

It is a super-2 number, since 2×980691931² = 1923513327057017522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (980691911) 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, 7318530 + ... + 7318663.

It is an arithmetic number, because the mean of its divisors is an integer number (248832298).

Almost surely, 2^980691931 is an apocalyptic number.

980691931 is a deficient number, since it is larger than the sum of its proper divisors (14637261).

980691931 is a wasteful number, since it uses less digits than its factorization.

980691931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14637260.

The product of its (nonzero) digits is 104976, while the sum is 46.

The square root of 980691931 is about 31316.0011974709. The cubic root of 980691931 is about 993.5221044806.

It can be divided in two parts, 98069 and 1931, that added together give a 5-th power (100000 = 10⁵).

The spelling of 980691931 in words is "nine hundred eighty million, six hundred ninety-one thousand, nine hundred thirty-one".