31504040513 has 8 divisors (see below), whose sum is σ = 34701715776. Its totient is φ = 28361977200.

The previous prime is 31504040459. The next prime is 31504040537.

31504040513 is nontrivially palindromic in base 10.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31504040513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31504040213) 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, 13901798 + ... + 13904063.

It is an arithmetic number, because the mean of its divisors is an integer number (4337714472).

Almost surely, 2^31504040513 is an apocalyptic number.

It is an amenable number.

31504040513 is a deficient number, since it is larger than the sum of its proper divisors (3197675263).

31504040513 is a wasteful number, since it uses less digits than its factorization.

31504040513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27805975.

The product of its (nonzero) digits is 3600, while the sum is 26.

It can be divided in two parts, 315040 and 40513, that added together give a palindrome (355553).

The spelling of 31504040513 in words is "thirty-one billion, five hundred four million, forty thousand, five hundred thirteen".