331400132 has 36 divisors (see below), whose sum is σ = 679838544. Its totient is φ = 140933520.

The previous prime is 331400101. The next prime is 331400141. The reversal of 331400132 is 231004133.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 331400132.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19223 + ... + 32129.

It is an arithmetic number, because the mean of its divisors is an integer number (18884404).

Almost surely, 2^331400132 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 331400132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (339919272).

331400132 is an abundant number, since it is smaller than the sum of its proper divisors (348438412).

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

331400132 is a wasteful number, since it uses less digits than its factorization.

331400132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13056 (or 13047 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 331400132 is about 18204.3986992155. The cubic root of 331400132 is about 692.0182677526.

Adding to 331400132 its reverse (231004133), we get a palindrome (562404265).

The spelling of 331400132 in words is "three hundred thirty-one million, four hundred thousand, one hundred thirty-two".