1313143553 has 2 divisors, whose sum is σ = 1313143554. Its totient is φ = 1313143552.

The previous prime is 1313143549. The next prime is 1313143567. The reversal of 1313143553 is 3553413131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 743271169 + 569872384 = 27263^2 + 23872^2 .

It is a cyclic number.

It is not a de Polignac number, because 1313143553 - 2² = 1313143549 is a prime.

It is not a weakly prime, because it can be changed into another prime (1313143543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656571776 + 656571777.

It is an arithmetic number, because the mean of its divisors is an integer number (656571777).

Almost surely, 2^1313143553 is an apocalyptic number.

It is an amenable number.

1313143553 is a deficient number, since it is larger than the sum of its proper divisors (1).

1313143553 is an equidigital number, since it uses as much as digits as its factorization.

1313143553 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8100, while the sum is 29.

The square root of 1313143553 is about 36237.3226522049. The cubic root of 1313143553 is about 1095.0587051087.

Adding to 1313143553 its reverse (3553413131), we get a palindrome (4866556684).

The spelling of 1313143553 in words is "one billion, three hundred thirteen million, one hundred forty-three thousand, five hundred fifty-three".