331631652 has 48 divisors (see below), whose sum is σ = 863799552. Its totient is φ = 98155680.

The previous prime is 331631603. The next prime is 331631659. The reversal of 331631652 is 256136133.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (331631659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23538 + ... + 34889.

It is an arithmetic number, because the mean of its divisors is an integer number (17995824).

Almost surely, 2^331631652 is an apocalyptic number.

It is an amenable number.

331631652 is an abundant number, since it is smaller than the sum of its proper divisors (532167900).

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

331631652 is a wasteful number, since it uses less digits than its factorization.

331631652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58488 (or 58486 counting only the distinct ones).

The product of its digits is 9720, while the sum is 30.

The square root of 331631652 is about 18210.7564917002. The cubic root of 331631652 is about 692.1793809194.

Adding to 331631652 its reverse (256136133), we get a palindrome (587767785).

The spelling of 331631652 in words is "three hundred thirty-one million, six hundred thirty-one thousand, six hundred fifty-two".