77077131 has 4 divisors (see below), whose sum is σ = 102769512. Its totient is φ = 51384752.

The previous prime is 77077111. The next prime is 77077141. The reversal of 77077131 is 13177077.

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 77077131 - 2⁹ = 77076619 is a prime.

It is a super-2 number, since 2×77077131² = 11881768246382322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 77077092 and 77077101.

It is not an unprimeable number, because it can be changed into a prime (77077111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12846186 + ... + 12846191.

It is an arithmetic number, because the mean of its divisors is an integer number (25692378).

Almost surely, 2^77077131 is an apocalyptic number.

77077131 is a deficient number, since it is larger than the sum of its proper divisors (25692381).

77077131 is a wasteful number, since it uses less digits than its factorization.

77077131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25692380.

The product of its (nonzero) digits is 7203, while the sum is 33.

The square root of 77077131 is about 8779.3582339485. The cubic root of 77077131 is about 425.5740910645.

The spelling of 77077131 in words is "seventy-seven million, seventy-seven thousand, one hundred thirty-one".