331225404977 has 2 divisors, whose sum is σ = 331225404978. Its totient is φ = 331225404976.

The previous prime is 331225404971. The next prime is 331225404989. The reversal of 331225404977 is 779404522133.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 311962463296 + 19262941681 = 558536^2 + 138791^2 .

It is a cyclic number.

It is not a de Polignac number, because 331225404977 - 2⁸ = 331225404721 is a prime.

It is not a weakly prime, because it can be changed into another prime (331225404971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165612702488 + 165612702489.

It is an arithmetic number, because the mean of its divisors is an integer number (165612702489).

Almost surely, 2^331225404977 is an apocalyptic number.

It is an amenable number.

331225404977 is a deficient number, since it is larger than the sum of its proper divisors (1).

331225404977 is an equidigital number, since it uses as much as digits as its factorization.

331225404977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1270080, while the sum is 47.

The spelling of 331225404977 in words is "three hundred thirty-one billion, two hundred twenty-five million, four hundred four thousand, nine hundred seventy-seven".