513231208253 has 2 divisors, whose sum is σ = 513231208254. Its totient is φ = 513231208252.

The previous prime is 513231208247. The next prime is 513231208271. The reversal of 513231208253 is 352802132315.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 331450064089 + 181781144164 = 575717^2 + 426358^2 .

It is a cyclic number.

It is not a de Polignac number, because 513231208253 - 2⁸ = 513231207997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (513231228253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256615604126 + 256615604127.

It is an arithmetic number, because the mean of its divisors is an integer number (256615604127).

Almost surely, 2^513231208253 is an apocalyptic number.

It is an amenable number.

513231208253 is a deficient number, since it is larger than the sum of its proper divisors (1).

513231208253 is an equidigital number, since it uses as much as digits as its factorization.

513231208253 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43200, while the sum is 35.

The spelling of 513231208253 in words is "five hundred thirteen billion, two hundred thirty-one million, two hundred eight thousand, two hundred fifty-three".