331229136 has 80 divisors (see below), whose sum is σ = 983937024. Its totient is φ = 94054272.

The previous prime is 331229123. The next prime is 331229149. The reversal of 331229136 is 631922133.

It is an interprime number because it is at equal distance from previous prime (331229123) and next prime (331229149).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53161 + ... + 59063.

Almost surely, 2^331229136 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 331229136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (491968512).

331229136 is an abundant number, since it is smaller than the sum of its proper divisors (652707888).

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

331229136 is a wasteful number, since it uses less digits than its factorization.

331229136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6088 (or 6082 counting only the distinct ones).

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

The square root of 331229136 is about 18199.7015360143. The cubic root of 331229136 is about 691.8992246357.

The spelling of 331229136 in words is "three hundred thirty-one million, two hundred twenty-nine thousand, one hundred thirty-six".