513231204881 has 2 divisors, whose sum is σ = 513231204882. Its totient is φ = 513231204880.

The previous prime is 513231204877. The next prime is 513231205027. The reversal of 513231204881 is 188402132315.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 479445456400 + 33785748481 = 692420^2 + 183809^2 .

It is a cyclic number.

It is not a de Polignac number, because 513231204881 - 2² = 513231204877 is a prime.

It is a super-2 number, since 2×513231204881² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (513231204481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256615602440 + 256615602441.

It is an arithmetic number, because the mean of its divisors is an integer number (256615602441).

Almost surely, 2^513231204881 is an apocalyptic number.

It is an amenable number.

513231204881 is a deficient number, since it is larger than the sum of its proper divisors (1).

513231204881 is an equidigital number, since it uses as much as digits as its factorization.

513231204881 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46080, while the sum is 38.

The spelling of 513231204881 in words is "five hundred thirteen billion, two hundred thirty-one million, two hundred four thousand, eight hundred eighty-one".