80712631 has 4 divisors (see below), whose sum is σ = 81179352. Its totient is φ = 80245912.

The previous prime is 80712629. The next prime is 80712659. The reversal of 80712631 is 13621708.

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 80712631 - 2¹ = 80712629 is a prime.

It is a super-2 number, since 2×80712631² = 13029057605884322, which 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 80712631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80712661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 233101 + ... + 233446.

It is an arithmetic number, because the mean of its divisors is an integer number (20294838).

Almost surely, 2^80712631 is an apocalyptic number.

80712631 is a deficient number, since it is larger than the sum of its proper divisors (466721).

80712631 is a wasteful number, since it uses less digits than its factorization.

80712631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 466720.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 80712631 is about 8984.0208704121. The cubic root of 80712631 is about 432.1625884772.

The spelling of 80712631 in words is "eighty million, seven hundred twelve thousand, six hundred thirty-one".