331421340 has 24 divisors (see below), whose sum is σ = 927979920. Its totient is φ = 88379008.

The previous prime is 331421303. The next prime is 331421371. The reversal of 331421340 is 43124133.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2761785 + ... + 2761904.

It is an arithmetic number, because the mean of its divisors is an integer number (38665830).

Almost surely, 2^331421340 is an apocalyptic number.

331421340 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

331421340 is an abundant number, since it is smaller than the sum of its proper divisors (596558580).

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

331421340 is a wasteful number, since it uses less digits than its factorization.

331421340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5523701 (or 5523699 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 331421340 is about 18204.9811864775. The cubic root of 331421340 is about 692.0330293745.

Adding to 331421340 its reverse (43124133), we get a palindrome (374545473).

The spelling of 331421340 in words is "three hundred thirty-one million, four hundred twenty-one thousand, three hundred forty".