3251312513 has 4 divisors (see below), whose sum is σ = 3283503828. Its totient is φ = 3219121200.

The previous prime is 3251312447. The next prime is 3251312527. The reversal of 3251312513 is 3152131523.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1727815489 + 1523497024 = 41567^2 + 39032^2 .

It is a cyclic number.

It is not a de Polignac number, because 3251312513 - 2¹⁴ = 3251296129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3251312563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16095506 + ... + 16095707.

It is an arithmetic number, because the mean of its divisors is an integer number (820875957).

Almost surely, 2^3251312513 is an apocalyptic number.

It is an amenable number.

3251312513 is a deficient number, since it is larger than the sum of its proper divisors (32191315).

3251312513 is a wasteful number, since it uses less digits than its factorization.

3251312513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32191314.

The product of its digits is 2700, while the sum is 26.

The square root of 3251312513 is about 57020.2815934822. The cubic root of 3251312513 is about 1481.4474081159.

The spelling of 3251312513 in words is "three billion, two hundred fifty-one million, three hundred twelve thousand, five hundred thirteen".