326312513 has 2 divisors, whose sum is σ = 326312514. Its totient is φ = 326312512.

The previous prime is 326312507. The next prime is 326312527. The reversal of 326312513 is 315213623.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 323172529 + 3139984 = 17977^2 + 1772^2 .

It is an emirp because it is prime and its reverse (315213623) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 326312513 - 2⁸ = 326312257 is a prime.

It is a super-2 number, since 2×326312513² = 212959712280750338, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (326312543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 163156256 + 163156257.

It is an arithmetic number, because the mean of its divisors is an integer number (163156257).

Almost surely, 2^326312513 is an apocalyptic number.

It is an amenable number.

326312513 is a deficient number, since it is larger than the sum of its proper divisors (1).

326312513 is an equidigital number, since it uses as much as digits as its factorization.

326312513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3240, while the sum is 26.

The square root of 326312513 is about 18064.1222593294. The cubic root of 326312513 is about 688.4587266876.

The spelling of 326312513 in words is "three hundred twenty-six million, three hundred twelve thousand, five hundred thirteen".