331663723 has 2 divisors, whose sum is σ = 331663724. Its totient is φ = 331663722.

The previous prime is 331663697. The next prime is 331663729. The reversal of 331663723 is 327366133.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 331663723 - 2²⁵ = 298109291 is a prime.

It is a super-2 number, since 2×331663723² = 220001650308441458, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (331663729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165831861 + 165831862.

It is an arithmetic number, because the mean of its divisors is an integer number (165831862).

Almost surely, 2^331663723 is an apocalyptic number.

331663723 is a deficient number, since it is larger than the sum of its proper divisors (1).

331663723 is an equidigital number, since it uses as much as digits as its factorization.

331663723 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40824, while the sum is 34.

The square root of 331663723 is about 18211.6370214212. The cubic root of 331663723 is about 692.2016929928.

The spelling of 331663723 in words is "three hundred thirty-one million, six hundred sixty-three thousand, seven hundred twenty-three".