331309023 has 16 divisors (see below), whose sum is σ = 475812480. Its totient is φ = 204380064.

The previous prime is 331309009. The next prime is 331309031. The reversal of 331309023 is 320903133.

It is not a de Polignac number, because 331309023 - 2⁹ = 331308511 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 331308984 and 331309002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331309003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65136 + ... + 70037.

It is an arithmetic number, because the mean of its divisors is an integer number (29738280).

Almost surely, 2^331309023 is an apocalyptic number.

331309023 is a deficient number, since it is larger than the sum of its proper divisors (144503457).

331309023 is a wasteful number, since it uses less digits than its factorization.

331309023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135238.

The product of its (nonzero) digits is 1458, while the sum is 24.

The square root of 331309023 is about 18201.8961374907. The cubic root of 331309023 is about 691.9548450550.

The spelling of 331309023 in words is "three hundred thirty-one million, three hundred nine thousand, twenty-three".