331661136 has 40 divisors (see below), whose sum is σ = 877693824. Its totient is φ = 107856640.

The previous prime is 331661101. The next prime is 331661137. The reversal of 331661136 is 631166133.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331661137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82296 + ... + 86231.

Almost surely, 2^331661136 is an apocalyptic number.

It is an amenable number.

331661136 is an abundant number, since it is smaller than the sum of its proper divisors (546032688).

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

331661136 is a wasteful number, since it uses less digits than its factorization.

331661136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168579 (or 168573 counting only the distinct ones).

The product of its digits is 5832, while the sum is 30.

The square root of 331661136 is about 18211.5659952680. The cubic root of 331661136 is about 692.1998932478.

The spelling of 331661136 in words is "three hundred thirty-one million, six hundred sixty-one thousand, one hundred thirty-six".