80513031 has 4 divisors (see below), whose sum is σ = 107350712. Its totient is φ = 53675352.

The previous prime is 80512987. The next prime is 80513033. The reversal of 80513031 is 13031508.

It is a happy number.

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

It is not a de Polignac number, because 80513031 - 2¹³ = 80504839 is a prime.

It is a super-2 number, since 2×80513031² = 12964696321613922, 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 = 80512989 and 80513007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80513033) 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, 13418836 + ... + 13418841.

It is an arithmetic number, because the mean of its divisors is an integer number (26837678).

Almost surely, 2^80513031 is an apocalyptic number.

80513031 is a deficient number, since it is larger than the sum of its proper divisors (26837681).

80513031 is a wasteful number, since it uses less digits than its factorization.

80513031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26837680.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 80513031 is about 8972.9053823163. The cubic root of 80513031 is about 431.8060525575.

Adding to 80513031 its reverse (13031508), we get a palindrome (93544539).

The spelling of 80513031 in words is "eighty million, five hundred thirteen thousand, thirty-one".