331616123 has 2 divisors, whose sum is σ = 331616124. Its totient is φ = 331616122.

The previous prime is 331616119. The next prime is 331616137. The reversal of 331616123 is 321616133.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 331616123 - 2² = 331616119 is a prime.

It is a super-2 number, since 2×331616123² = 219938506067102258, which contains 22 as substring.

It is a Sophie Germain prime.

It is a plaindrome in base 7.

It is a junction number, because it is equal to n+sod(n) for n = 331616092 and 331616101.

It is not a weakly prime, because it can be changed into another prime (331616113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165808061 + 165808062.

It is an arithmetic number, because the mean of its divisors is an integer number (165808062).

Almost surely, 2^331616123 is an apocalyptic number.

331616123 is a deficient number, since it is larger than the sum of its proper divisors (1).

331616123 is an equidigital number, since it uses as much as digits as its factorization.

331616123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1944, while the sum is 26.

The square root of 331616123 is about 18210.3301178205. The cubic root of 331616123 is about 692.1685767422.

The spelling of 331616123 in words is "three hundred thirty-one million, six hundred sixteen thousand, one hundred twenty-three".