80131356 has 60 divisors (see below), whose sum is σ = 218607312. Its totient is φ = 25546752.

The previous prime is 80131349. The next prime is 80131357. The reversal of 80131356 is 65313108.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80131357) by changing a digit.

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 19 ways as a sum of consecutive naturals, for example, 2076 + ... + 12828.

Almost surely, 2^80131356 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80131356, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109303656).

80131356 is an abundant number, since it is smaller than the sum of its proper divisors (138475956).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

80131356 is a wasteful number, since it uses less digits than its factorization.

80131356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10792 (or 10781 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 80131356 is about 8951.6119218831. The cubic root of 80131356 is about 431.1226406520.

The spelling of 80131356 in words is "eighty million, one hundred thirty-one thousand, three hundred fifty-six".