331140132 has 36 divisors (see below), whose sum is σ = 881105680. Its totient is φ = 104570352.

The previous prime is 331140101. The next prime is 331140137. The reversal of 331140132 is 231041133.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (331140137) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 241378 + ... + 242745.

Almost surely, 2^331140132 is an apocalyptic number.

It is an amenable number.

331140132 is an abundant number, since it is smaller than the sum of its proper divisors (549965548).

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

331140132 is a wasteful number, since it uses less digits than its factorization.

331140132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 484152 (or 484147 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 331140132 is about 18197.2561667961. The cubic root of 331140132 is about 691.8372460751.

Adding to 331140132 its reverse (231041133), we get a palindrome (562181265).

The spelling of 331140132 in words is "three hundred thirty-one million, one hundred forty thousand, one hundred thirty-two".