80931369 has 4 divisors (see below), whose sum is σ = 107908496. Its totient is φ = 53954244.

The previous prime is 80931353. The next prime is 80931397. The reversal of 80931369 is 96313908.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 80931369 - 2⁴ = 80931353 is a prime.

It is a super-2 number, since 2×80931369² = 13099772976428322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80931329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13488559 + ... + 13488564.

It is an arithmetic number, because the mean of its divisors is an integer number (26977124).

Almost surely, 2^80931369 is an apocalyptic number.

It is an amenable number.

80931369 is a deficient number, since it is larger than the sum of its proper divisors (26977127).

80931369 is a wasteful number, since it uses less digits than its factorization.

80931369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26977126.

The product of its (nonzero) digits is 34992, while the sum is 39.

The square root of 80931369 is about 8996.1863586744. The cubic root of 80931369 is about 432.5526352905.

The spelling of 80931369 in words is "eighty million, nine hundred thirty-one thousand, three hundred sixty-nine".