31564046513 has 8 divisors (see below), whose sum is σ = 33448864680. Its totient is φ = 29732321920.

The previous prime is 31564046497. The next prime is 31564046531.

31564046513 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 4 ways, for example, as 81577024 + 31482469489 = 9032^2 + 177433^2 .

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

It is not a de Polignac number, because 31564046513 - 2⁴ = 31564046497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31564046593) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13272170 + ... + 13274547.

It is an arithmetic number, because the mean of its divisors is an integer number (4181108085).

Almost surely, 2^31564046513 is an apocalyptic number.

It is an amenable number.

31564046513 is a deficient number, since it is larger than the sum of its proper divisors (1884818167).

31564046513 is a wasteful number, since it uses less digits than its factorization.

31564046513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26546787.

The product of its (nonzero) digits is 129600, while the sum is 38.

The spelling of 31564046513 in words is "thirty-one billion, five hundred sixty-four million, forty-six thousand, five hundred thirteen".