513231910357 has 2 divisors, whose sum is σ = 513231910358. Its totient is φ = 513231910356.

The previous prime is 513231910241. The next prime is 513231910391. The reversal of 513231910357 is 753019132315.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 400487731281 + 112744179076 = 632841^2 + 335774^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-513231910357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (513231910757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256615955178 + 256615955179.

It is an arithmetic number, because the mean of its divisors is an integer number (256615955179).

Almost surely, 2^513231910357 is an apocalyptic number.

It is an amenable number.

513231910357 is a deficient number, since it is larger than the sum of its proper divisors (1).

513231910357 is an equidigital number, since it uses as much as digits as its factorization.

513231910357 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 85050, while the sum is 40.

The spelling of 513231910357 in words is "five hundred thirteen billion, two hundred thirty-one million, nine hundred ten thousand, three hundred fifty-seven".