1315402541 has 2 divisors, whose sum is σ = 1315402542. Its totient is φ = 1315402540.

The previous prime is 1315402531. The next prime is 1315402553. The reversal of 1315402541 is 1452045131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1152942025 + 162460516 = 33955^2 + 12746^2 .

It is a cyclic number.

It is not a de Polignac number, because 1315402541 - 2¹⁴ = 1315386157 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1315402541.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1315402531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 657701270 + 657701271.

It is an arithmetic number, because the mean of its divisors is an integer number (657701271).

Almost surely, 2^1315402541 is an apocalyptic number.

It is an amenable number.

1315402541 is a deficient number, since it is larger than the sum of its proper divisors (1).

1315402541 is an equidigital number, since it uses as much as digits as its factorization.

1315402541 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 1315402541 is about 36268.4786143560. The cubic root of 1315402541 is about 1095.6862849633.

Adding to 1315402541 its reverse (1452045131), we get a palindrome (2767447672).

The spelling of 1315402541 in words is "one billion, three hundred fifteen million, four hundred two thousand, five hundred forty-one".