979781031 has 12 divisors (see below), whose sum is σ = 1415520808. Its totient is φ = 653057424.

The previous prime is 979781029. The next prime is 979781039. The reversal of 979781031 is 130187979.

It is not a de Polignac number, because 979781031 - 2¹ = 979781029 is a prime.

It is a super-2 number, since 2×979781031² = 1919941737414845922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (979781039) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 64536 + ... + 78258.

Almost surely, 2^979781031 is an apocalyptic number.

979781031 is a deficient number, since it is larger than the sum of its proper divisors (435739777).

979781031 is a wasteful number, since it uses less digits than its factorization.

979781031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21662 (or 21659 counting only the distinct ones).

The product of its (nonzero) digits is 95256, while the sum is 45.

The square root of 979781031 is about 31301.4541355510. The cubic root of 979781031 is about 993.2144034928.

The spelling of 979781031 in words is "nine hundred seventy-nine million, seven hundred eighty-one thousand, thirty-one".