513031268 has 6 divisors (see below), whose sum is σ = 897804726. Its totient is φ = 256515632.

The previous prime is 513031231. The next prime is 513031339. The reversal of 513031268 is 862130315.

It can be written as a sum of positive squares in only one way, i.e., 455907904 + 57123364 = 21352^2 + 7558^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 513031268.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64128905 + ... + 64128912.

It is an arithmetic number, because the mean of its divisors is an integer number (149634121).

Almost surely, 2^513031268 is an apocalyptic number.

It is an amenable number.

513031268 is a deficient number, since it is larger than the sum of its proper divisors (384773458).

513031268 is a wasteful number, since it uses less digits than its factorization.

513031268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128257821 (or 128257819 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 513031268 is about 22650.1935532569. The cubic root of 513031268 is about 800.5367585323.

The spelling of 513031268 in words is "five hundred thirteen million, thirty-one thousand, two hundred sixty-eight".