331250020 has 24 divisors (see below), whose sum is σ = 699653304. Its totient is φ = 131732736.

The previous prime is 331249991. The next prime is 331250033. The reversal of 331250020 is 20052133.

It can be written as a sum of positive squares in 4 ways, for example, as 204146944 + 127103076 = 14288^2 + 11274^2 .

It is a junction number, because it is equal to n+sod(n) for n = 331249976 and 331250003.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44409 + ... + 51328.

It is an arithmetic number, because the mean of its divisors is an integer number (29152221).

Almost surely, 2^331250020 is an apocalyptic number.

It is an amenable number.

331250020 is an abundant number, since it is smaller than the sum of its proper divisors (368403284).

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

331250020 is a wasteful number, since it uses less digits than its factorization.

331250020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95919 (or 95917 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 16.

The square root of 331250020 is about 18200.2752726435. The cubic root of 331250020 is about 691.9137657475.

The spelling of 331250020 in words is "three hundred thirty-one million, two hundred fifty thousand, twenty".