331401138 has 16 divisors (see below), whose sum is σ = 665198400. Its totient is φ = 110067696.

The previous prime is 331401121. The next prime is 331401139. The reversal of 331401138 is 831104133.

It is not an unprimeable number, because it can be changed into a prime (331401139) 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, 98038 + ... + 101361.

It is an arithmetic number, because the mean of its divisors is an integer number (41574900).

Almost surely, 2^331401138 is an apocalyptic number.

331401138 is an abundant number, since it is smaller than the sum of its proper divisors (333797262).

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

331401138 is a wasteful number, since it uses less digits than its factorization.

331401138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199681.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 331401138 is about 18204.4263298792. The cubic root of 331401138 is about 692.0189679833.

The spelling of 331401138 in words is "three hundred thirty-one million, four hundred one thousand, one hundred thirty-eight".