1315402481 has 2 divisors, whose sum is σ = 1315402482. Its totient is φ = 1315402480.

The previous prime is 1315402469. The next prime is 1315402531. The reversal of 1315402481 is 1842045131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 755370256 + 560032225 = 27484^2 + 23665^2 .

It is a cyclic number.

It is not a de Polignac number, because 1315402481 - 2¹⁴ = 1315386097 is a prime.

It is a super-2 number, since 2×1315402481² = 3460567374041910722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1315402411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 657701240 + 657701241.

It is an arithmetic number, because the mean of its divisors is an integer number (657701241).

Almost surely, 2^1315402481 is an apocalyptic number.

It is an amenable number.

1315402481 is a deficient number, since it is larger than the sum of its proper divisors (1).

1315402481 is an equidigital number, since it uses as much as digits as its factorization.

1315402481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 1315402481 is about 36268.4777871915. The cubic root of 1315402481 is about 1095.6862683040.

The spelling of 1315402481 in words is "one billion, three hundred fifteen million, four hundred two thousand, four hundred eighty-one".