331400244 has 48 divisors (see below), whose sum is σ = 935722368. Its totient is φ = 89115648.

The previous prime is 331400213. The next prime is 331400249. The reversal of 331400244 is 442004133.

It is a super-2 number, since 2×331400244² = 219652243446519072, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 331400244.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331400249) 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, 114609 + ... + 117464.

It is an arithmetic number, because the mean of its divisors is an integer number (19494216).

Almost surely, 2^331400244 is an apocalyptic number.

331400244 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is an amenable number.

331400244 is an abundant number, since it is smaller than the sum of its proper divisors (604322124).

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

331400244 is a wasteful number, since it uses less digits than its factorization.

331400244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232104 (or 232102 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 331400244 is about 18204.4017753949. The cubic root of 331400244 is about 692.0183457107.

Adding to 331400244 its reverse (442004133), we get a palindrome (773404377).

The spelling of 331400244 in words is "three hundred thirty-one million, four hundred thousand, two hundred forty-four".