331663043 has 2 divisors, whose sum is σ = 331663044. Its totient is φ = 331663042.

The previous prime is 331663001. The next prime is 331663051. The reversal of 331663043 is 340366133.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 331663043 - 2¹⁸ = 331400899 is a prime.

It is a super-2 number, since 2×331663043² = 220000748184039698, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 331662997 and 331663015.

It is not a weakly prime, because it can be changed into another prime (331663543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165831521 + 165831522.

It is an arithmetic number, because the mean of its divisors is an integer number (165831522).

Almost surely, 2^331663043 is an apocalyptic number.

331663043 is a deficient number, since it is larger than the sum of its proper divisors (1).

331663043 is an equidigital number, since it uses as much as digits as its factorization.

331663043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11664, while the sum is 29.

The square root of 331663043 is about 18211.6183520301. The cubic root of 331663043 is about 692.2012199259.

The spelling of 331663043 in words is "three hundred thirty-one million, six hundred sixty-three thousand, forty-three".