331693923 has 16 divisors (see below), whose sum is σ = 482829696. Its totient is φ = 200874240.

The previous prime is 331693889. The next prime is 331693931. The reversal of 331693923 is 329396133.

It is a happy number.

It is not a de Polignac number, because 331693923 - 2⁸ = 331693667 is a prime.

It is a super-2 number, since 2×331693923² = 220041717110259858, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (331693223) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 53040 + ... + 58962.

It is an arithmetic number, because the mean of its divisors is an integer number (30176856).

Almost surely, 2^331693923 is an apocalyptic number.

331693923 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

331693923 is a deficient number, since it is larger than the sum of its proper divisors (151135773).

331693923 is a wasteful number, since it uses less digits than its factorization.

331693923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7634.

The product of its digits is 78732, while the sum is 39.

The square root of 331693923 is about 18212.4661427276. The cubic root of 331693923 is about 692.2227020805. Note that the first 3 decimals are identical.

The spelling of 331693923 in words is "three hundred thirty-one million, six hundred ninety-three thousand, nine hundred twenty-three".