331980049 has 2 divisors, whose sum is σ = 331980050. Its totient is φ = 331980048.

The previous prime is 331980017. The next prime is 331980053. The reversal of 331980049 is 940089133.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 191130625 + 140849424 = 13825^2 + 11868^2 .

It is an emirp because it is prime and its reverse (940089133) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 331980049 - 2⁵ = 331980017 is a prime.

It is a super-2 number, since 2×331980049² = 220421505868084802, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (331980059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165990024 + 165990025.

It is an arithmetic number, because the mean of its divisors is an integer number (165990025).

Almost surely, 2^331980049 is an apocalyptic number.

It is an amenable number.

331980049 is a deficient number, since it is larger than the sum of its proper divisors (1).

331980049 is an equidigital number, since it uses as much as digits as its factorization.

331980049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 331980049 is about 18220.3196733757. The cubic root of 331980049 is about 692.4216867220.

The spelling of 331980049 in words is "three hundred thirty-one million, nine hundred eighty thousand, forty-nine".