331259940 has 144 divisors (see below), whose sum is σ = 1101836736. Its totient is φ = 79891200.

The previous prime is 331259939. The next prime is 331259959. The reversal of 331259940 is 49952133.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 331259895 and 331259904.

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 47 ways as a sum of consecutive naturals, for example, 579855 + ... + 580425.

It is an arithmetic number, because the mean of its divisors is an integer number (7651644).

Almost surely, 2^331259940 is an apocalyptic number.

331259940 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 331259940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (550918368).

331259940 is an abundant number, since it is smaller than the sum of its proper divisors (770576796).

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

331259940 is a wasteful number, since it uses less digits than its factorization.

331259940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 890 (or 885 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 36.

The square root of 331259940 is about 18200.5477939539. The cubic root of 331259940 is about 691.9206726312.

The spelling of 331259940 in words is "three hundred thirty-one million, two hundred fifty-nine thousand, nine hundred forty".