80510731 has 4 divisors (see below), whose sum is σ = 92012272. Its totient is φ = 69009192.

The previous prime is 80510723. The next prime is 80510767. The reversal of 80510731 is 13701508.

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

It is not a de Polignac number, because 80510731 - 2³ = 80510723 is a prime.

It is a super-2 number, since 2×80510731² = 12963955612308722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 80510696 and 80510705.

It is not an unprimeable number, because it can be changed into a prime (80510701) 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, 5750760 + ... + 5750773.

It is an arithmetic number, because the mean of its divisors is an integer number (23003068).

Almost surely, 2^80510731 is an apocalyptic number.

80510731 is a deficient number, since it is larger than the sum of its proper divisors (11501541).

80510731 is a wasteful number, since it uses less digits than its factorization.

80510731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11501540.

The product of its (nonzero) digits is 840, while the sum is 25.

The square root of 80510731 is about 8972.7772177849. Note that the first 3 decimals coincide. The cubic root of 80510731 is about 431.8019407453.

The spelling of 80510731 in words is "eighty million, five hundred ten thousand, seven hundred thirty-one".