977131 has 4 divisors (see below), whose sum is σ = 988200. Its totient is φ = 966064.

The previous prime is 977107. The next prime is 977147. The reversal of 977131 is 131779.

It is a happy number.

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 977131 - 2¹¹ = 975083 is a prime.

It is a super-2 number, since 2×977131² = 1909569982322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 977131.

It is not an unprimeable number, because it can be changed into a prime (977191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5401 + ... + 5578.

It is an arithmetic number, because the mean of its divisors is an integer number (247050).

2⁹⁷⁷¹³¹ is an apocalyptic number.

977131 is a deficient number, since it is larger than the sum of its proper divisors (11069).

977131 is a wasteful number, since it uses less digits than its factorization.

977131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11068.

The product of its digits is 1323, while the sum is 28.

The square root of 977131 is about 988.4993677287. The cubic root of 977131 is about 99.2318140134.

The spelling of 977131 in words is "nine hundred seventy-seven thousand, one hundred thirty-one".