80730631 has 4 divisors (see below), whose sum is σ = 82448352. Its totient is φ = 79012912.

The previous prime is 80730619. The next prime is 80730659. The reversal of 80730631 is 13603708.

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-80730631 is a prime.

It is a super-2 number, since 2×80730631² = 13034869563316322, 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 80730631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80730691) 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, 858790 + ... + 858883.

It is an arithmetic number, because the mean of its divisors is an integer number (20612088).

Almost surely, 2^80730631 is an apocalyptic number.

80730631 is a deficient number, since it is larger than the sum of its proper divisors (1717721).

80730631 is a wasteful number, since it uses less digits than its factorization.

80730631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1717720.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 80730631 is about 8985.0225931825. The cubic root of 80730631 is about 432.1947121085.

The spelling of 80730631 in words is "eighty million, seven hundred thirty thousand, six hundred thirty-one".