9977316931 has 4 divisors (see below), whose sum is σ = 9977571864. Its totient is φ = 9977062000.

The previous prime is 9977316893. The next prime is 9977316941. The reversal of 9977316931 is 1396137799.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1396137799 = 7 ⋅199448257.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9977316931 is a prime.

It is a super-2 number, since 2×9977316931² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9977316941) 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, 55045 + ... + 151606.

It is an arithmetic number, because the mean of its divisors is an integer number (2494392966).

Almost surely, 2^9977316931 is an apocalyptic number.

9977316931 is a deficient number, since it is larger than the sum of its proper divisors (254933).

9977316931 is a wasteful number, since it uses less digits than its factorization.

9977316931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254932.

The product of its digits is 1928934, while the sum is 55.

The square root of 9977316931 is about 99886.5202667507. The cubic root of 9977316931 is about 2152.8044837828.

The spelling of 9977316931 in words is "nine billion, nine hundred seventy-seven million, three hundred sixteen thousand, nine hundred thirty-one".