80971318 has 32 divisors (see below), whose sum is σ = 131678208. Its totient is φ = 37260000.

The previous prime is 80971307. The next prime is 80971321. The reversal of 80971318 is 81317908.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107443 + ... + 108193.

It is an arithmetic number, because the mean of its divisors is an integer number (4114944).

Almost surely, 2^80971318 is an apocalyptic number.

80971318 is a deficient number, since it is larger than the sum of its proper divisors (50706890).

80971318 is a wasteful number, since it uses less digits than its factorization.

80971318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 868.

The product of its (nonzero) digits is 12096, while the sum is 37.

The square root of 80971318 is about 8998.4064144714. The cubic root of 80971318 is about 432.6237951839.

It can be divided in two parts, 809 and 71318, that added together give a palindrome (72127).

The spelling of 80971318 in words is "eighty million, nine hundred seventy-one thousand, three hundred eighteen".