331138485 has 24 divisors (see below), whose sum is σ = 587325024. Its totient is φ = 172499040.

The previous prime is 331138471. The next prime is 331138523. The reversal of 331138485 is 584831133.

It is not a de Polignac number, because 331138485 - 2⁴ = 331138469 is a prime.

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 83631 + ... + 87500.

It is an arithmetic number, because the mean of its divisors is an integer number (24471876).

Almost surely, 2^331138485 is an apocalyptic number.

It is an amenable number.

331138485 is a deficient number, since it is larger than the sum of its proper divisors (256186539).

331138485 is a wasteful number, since it uses less digits than its factorization.

331138485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171185 (or 171182 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 331138485 is about 18197.2109126646. The cubic root of 331138485 is about 691.8360990704.

The spelling of 331138485 in words is "three hundred thirty-one million, one hundred thirty-eight thousand, four hundred eighty-five".