331400432 has 40 divisors (see below), whose sum is σ = 737333760. Its totient is φ = 142706880.

The previous prime is 331400393. The next prime is 331400473. The reversal of 331400432 is 234004133.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46208 + ... + 52895.

It is an arithmetic number, because the mean of its divisors is an integer number (18433344).

Almost surely, 2^331400432 is an apocalyptic number.

It is an amenable number.

331400432 is an abundant number, since it is smaller than the sum of its proper divisors (405933328).

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

331400432 is a wasteful number, since it uses less digits than its factorization.

331400432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99141 (or 99135 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 331400432 is about 18204.4069389805. The cubic root of 331400432 is about 692.0184765690.

Adding to 331400432 its reverse (234004133), we get a palindrome (565404565).

The spelling of 331400432 in words is "three hundred thirty-one million, four hundred thousand, four hundred thirty-two".