331065061 has 2 divisors, whose sum is σ = 331065062. Its totient is φ = 331065060.

The previous prime is 331065047. The next prime is 331065079. The reversal of 331065061 is 160560133.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 221444161 + 109620900 = 14881^2 + 10470^2 .

It is a cyclic number.

It is not a de Polignac number, because 331065061 - 2⁹ = 331064549 is a prime.

It is a super-2 number, since 2×331065061² = 219208149229867442, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (331065661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165532530 + 165532531.

It is an arithmetic number, because the mean of its divisors is an integer number (165532531).

Almost surely, 2^331065061 is an apocalyptic number.

It is an amenable number.

331065061 is a deficient number, since it is larger than the sum of its proper divisors (1).

331065061 is an equidigital number, since it uses as much as digits as its factorization.

331065061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 331065061 is about 18195.1933487941. The cubic root of 331065061 is about 691.7849612223.

The spelling of 331065061 in words is "three hundred thirty-one million, sixty-five thousand, sixty-one".