331630049 has 2 divisors, whose sum is σ = 331630050. Its totient is φ = 331630048.

The previous prime is 331630007. The next prime is 331630081. The reversal of 331630049 is 940036133.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 325153024 + 6477025 = 18032^2 + 2545^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-331630049 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (331630249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165815024 + 165815025.

It is an arithmetic number, because the mean of its divisors is an integer number (165815025).

Almost surely, 2^331630049 is an apocalyptic number.

It is an amenable number.

331630049 is a deficient number, since it is larger than the sum of its proper divisors (1).

331630049 is an equidigital number, since it uses as much as digits as its factorization.

331630049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 29.

The square root of 331630049 is about 18210.7124791975. The cubic root of 331630049 is about 692.1782656606.

The spelling of 331630049 in words is "three hundred thirty-one million, six hundred thirty thousand, forty-nine".