977233531 has 2 divisors, whose sum is σ = 977233532. Its totient is φ = 977233530.

The previous prime is 977233519. The next prime is 977233547. The reversal of 977233531 is 135332779.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (135332779) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 977233531 - 2¹¹ = 977231483 is a prime.

It is a super-2 number, since 2×977233531² = 1909970748221455922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (977233511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 488616765 + 488616766.

It is an arithmetic number, because the mean of its divisors is an integer number (488616766).

Almost surely, 2^977233531 is an apocalyptic number.

977233531 is a deficient number, since it is larger than the sum of its proper divisors (1).

977233531 is an equidigital number, since it uses as much as digits as its factorization.

977233531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 119070, while the sum is 40.

The square root of 977233531 is about 31260.7346522758. The cubic root of 977233531 is about 992.3528471186.

The spelling of 977233531 in words is "nine hundred seventy-seven million, two hundred thirty-three thousand, five hundred thirty-one".