977431 has 16 divisors (see below), whose sum is σ = 1257984. Its totient is φ = 738144.

The previous prime is 977413. The next prime is 977437. The reversal of 977431 is 134779.

It is a cyclic number.

It is not a de Polignac number, because 977431 - 2⁹ = 976919 is a prime.

It is a super-2 number, since 2×977431² = 1910742719522, which contains 22 as substring.

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 977393 and 977402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (977437) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1860 + ... + 2326.

It is an arithmetic number, because the mean of its divisors is an integer number (78624).

2⁹⁷⁷⁴³¹ is an apocalyptic number.

977431 is a gapful number since it is divisible by the number (91) formed by its first and last digit.

977431 is a deficient number, since it is larger than the sum of its proper divisors (280553).

977431 is a wasteful number, since it uses less digits than its factorization.

977431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510.

The product of its digits is 5292, while the sum is 31.

The square root of 977431 is about 988.6511012486. The cubic root of 977431 is about 99.2419684001.

The spelling of 977431 in words is "nine hundred seventy-seven thousand, four hundred thirty-one".