513323236 has 6 divisors (see below), whose sum is σ = 898315670. Its totient is φ = 256661616.

The previous prime is 513323231. The next prime is 513323243. The reversal of 513323236 is 632323315.

It can be written as a sum of positive squares in only one way, i.e., 513294336 + 28900 = 22656^2 + 170^2 .

It is not an unprimeable number, because it can be changed into a prime (513323231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64165401 + ... + 64165408.

Almost surely, 2^513323236 is an apocalyptic number.

It is an amenable number.

513323236 is a deficient number, since it is larger than the sum of its proper divisors (384992434).

513323236 is a wasteful number, since it uses less digits than its factorization.

513323236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128330813 (or 128330811 counting only the distinct ones).

The product of its digits is 9720, while the sum is 28.

The square root of 513323236 is about 22656.6377911640. The cubic root of 513323236 is about 800.6885925470.

The spelling of 513323236 in words is "five hundred thirteen million, three hundred twenty-three thousand, two hundred thirty-six".