331144002 has 24 divisors (see below), whose sum is σ = 819975936. Its totient is φ = 94612536.

The previous prime is 331144001. The next prime is 331144019. The reversal of 331144002 is 200441133.

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 (331144001) 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, 1313938 + ... + 1314189.

It is an arithmetic number, because the mean of its divisors is an integer number (34165664).

Almost surely, 2^331144002 is an apocalyptic number.

331144002 is an abundant number, since it is smaller than the sum of its proper divisors (488831934).

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

331144002 is a wasteful number, since it uses less digits than its factorization.

331144002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2628142 (or 2628139 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 331144002 is about 18197.3625011978. The cubic root of 331144002 is about 691.8399412077.

Adding to 331144002 its reverse (200441133), we get a palindrome (531585135).

The spelling of 331144002 in words is "three hundred thirty-one million, one hundred forty-four thousand, two".