80984631 has 48 divisors (see below), whose sum is σ = 140778240. Its totient is φ = 40435200.

The previous prime is 80984627. The next prime is 80984653. The reversal of 80984631 is 13648908.

It is not a de Polignac number, because 80984631 - 2² = 80984627 is a prime.

It is a super-2 number, since 2×80984631² = 13117020916412322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 80984631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80984611) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 66831 + ... + 68031.

It is an arithmetic number, because the mean of its divisors is an integer number (2932880).

Almost surely, 2^80984631 is an apocalyptic number.

80984631 is a deficient number, since it is larger than the sum of its proper divisors (59793609).

80984631 is a wasteful number, since it uses less digits than its factorization.

80984631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1256 (or 1243 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 80984631 is about 8999.1461261611. The cubic root of 80984631 is about 432.6475040111.

The spelling of 80984631 in words is "eighty million, nine hundred eighty-four thousand, six hundred thirty-one".