331042457 has 2 divisors, whose sum is σ = 331042458. Its totient is φ = 331042456.

The previous prime is 331042433. The next prime is 331042463. The reversal of 331042457 is 754240133.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 217385536 + 113656921 = 14744^2 + 10661^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-331042457 is a prime.

It is not a weakly prime, because it can be changed into another prime (331042417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165521228 + 165521229.

It is an arithmetic number, because the mean of its divisors is an integer number (165521229).

Almost surely, 2^331042457 is an apocalyptic number.

It is an amenable number.

331042457 is a deficient number, since it is larger than the sum of its proper divisors (1).

331042457 is an equidigital number, since it uses as much as digits as its factorization.

331042457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 29.

The square root of 331042457 is about 18194.5721851326. The cubic root of 331042457 is about 691.7692166200.

The spelling of 331042457 in words is "three hundred thirty-one million, forty-two thousand, four hundred fifty-seven".