9977131 has 4 divisors (see below), whose sum is σ = 10321200. Its totient is φ = 9633064.

The previous prime is 9977069. The next prime is 9977137. The reversal of 9977131 is 1317799.

9977131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 9977131 - 2⁹ = 9976619 is a prime.

It is a super-3 number, since 3×9977131³ (a number of 22 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

9977131 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (9977137) 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, 171991 + ... + 172048.

It is an arithmetic number, because the mean of its divisors is an integer number (2580300).

Almost surely, 2^9977131 is an apocalyptic number.

9977131 is a deficient number, since it is larger than the sum of its proper divisors (344069).

9977131 is a wasteful number, since it uses less digits than its factorization.

9977131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344068.

The product of its digits is 11907, while the sum is 37.

The square root of 9977131 is about 3158.6596841065. The cubic root of 9977131 is about 215.2791110930.

It can be divided in two parts, 997 and 7131, that added together give a triangular number (8128 = T₁₂₇).

The spelling of 9977131 in words is "nine million, nine hundred seventy-seven thousand, one hundred thirty-one".