653131613 has 2 divisors, whose sum is σ = 653131614. Its totient is φ = 653131612.

The previous prime is 653131603. The next prime is 653131729. The reversal of 653131613 is 316131356.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 644499769 + 8631844 = 25387^2 + 2938^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-653131613 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (653131603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 326565806 + 326565807.

It is an arithmetic number, because the mean of its divisors is an integer number (326565807).

Almost surely, 2^653131613 is an apocalyptic number.

It is an amenable number.

653131613 is a deficient number, since it is larger than the sum of its proper divisors (1).

653131613 is an equidigital number, since it uses as much as digits as its factorization.

653131613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4860, while the sum is 29.

The square root of 653131613 is about 25556.4397559597. The cubic root of 653131613 is about 867.6280185462.

Adding to 653131613 its reverse (316131356), we get a palindrome (969262969).

The spelling of 653131613 in words is "six hundred fifty-three million, one hundred thirty-one thousand, six hundred thirteen".