323120513 has 8 divisors (see below), whose sum is σ = 345516840. Its totient is φ = 301100800.

The previous prime is 323120453. The next prime is 323120527. The reversal of 323120513 is 315021323.

It can be written as a sum of positive squares in 4 ways, for example, as 110923024 + 212197489 = 10532^2 + 14567^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 323120513 - 2⁸ = 323120257 is a prime.

It is not an unprimeable number, because it can be changed into a prime (323120543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92378 + ... + 95811.

It is an arithmetic number, because the mean of its divisors is an integer number (43189605).

Almost surely, 2^323120513 is an apocalyptic number.

It is an amenable number.

323120513 is a deficient number, since it is larger than the sum of its proper divisors (22396327).

323120513 is a wasteful number, since it uses less digits than its factorization.

323120513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188307.

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 323120513 is about 17975.5532042828. The cubic root of 323120513 is about 686.2065247844.

Adding to 323120513 its reverse (315021323), we get a palindrome (638141836).

The spelling of 323120513 in words is "three hundred twenty-three million, one hundred twenty thousand, five hundred thirteen".