7977356231 has 8 divisors (see below), whose sum is σ = 8596705824. Its totient is φ = 7358821920.

The previous prime is 7977356227. The next prime is 7977356243. The reversal of 7977356231 is 1326537797.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7977356231 - 2² = 7977356227 is a prime.

It is a super-2 number, since 2×7977356231² (a number of 21 digits) 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 7977356231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7977352231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 183416 + ... + 222701.

It is an arithmetic number, because the mean of its divisors is an integer number (1074588228).

Almost surely, 2^7977356231 is an apocalyptic number.

7977356231 is a deficient number, since it is larger than the sum of its proper divisors (619349593).

7977356231 is a wasteful number, since it uses less digits than its factorization.

7977356231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407641.

The product of its digits is 1666980, while the sum is 50.

The square root of 7977356231 is about 89316.0468840846. The cubic root of 7977356231 is about 1998.1112360970. Note that the first 3 decimals are identical.

The spelling of 7977356231 in words is "seven billion, nine hundred seventy-seven million, three hundred fifty-six thousand, two hundred thirty-one".