80077931 has 4 divisors (see below), whose sum is σ = 81273192. Its totient is φ = 78882672.

The previous prime is 80077919. The next prime is 80077967. The reversal of 80077931 is 13977008.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80077931 is a prime.

It is a super-2 number, since 2×80077931² = 12824950066481522, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 80077891 and 80077900.

It is not an unprimeable number, because it can be changed into a prime (80077901) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 597530 + ... + 597663.

It is an arithmetic number, because the mean of its divisors is an integer number (20318298).

Almost surely, 2^80077931 is an apocalyptic number.

80077931 is a deficient number, since it is larger than the sum of its proper divisors (1195261).

80077931 is a wasteful number, since it uses less digits than its factorization.

80077931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1195260.

The product of its (nonzero) digits is 10584, while the sum is 35.

The square root of 80077931 is about 8948.6273249030. The cubic root of 80077931 is about 431.0268069739.

The spelling of 80077931 in words is "eighty million, seventy-seven thousand, nine hundred thirty-one".