1313256653 has 2 divisors, whose sum is σ = 1313256654. Its totient is φ = 1313256652.

The previous prime is 1313256629. The next prime is 1313256671. The reversal of 1313256653 is 3566523131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1313192644 + 64009 = 36238^2 + 253^2 .

It is a cyclic number.

It is not a de Polignac number, because 1313256653 - 2¹² = 1313252557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1313256673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656628326 + 656628327.

It is an arithmetic number, because the mean of its divisors is an integer number (656628327).

Almost surely, 2^1313256653 is an apocalyptic number.

It is an amenable number.

1313256653 is a deficient number, since it is larger than the sum of its proper divisors (1).

1313256653 is an equidigital number, since it uses as much as digits as its factorization.

1313256653 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48600, while the sum is 35.

The square root of 1313256653 is about 36238.8831643581. The cubic root of 1313256653 is about 1095.0901430485.

Adding to 1313256653 its reverse (3566523131), we get a palindrome (4879779784).

The spelling of 1313256653 in words is "one billion, three hundred thirteen million, two hundred fifty-six thousand, six hundred fifty-three".