13001312331 has 24 divisors (see below), whose sum is σ = 21484419840. Its totient is φ = 7421728176.

The previous prime is 13001312249. The next prime is 13001312333. The reversal of 13001312331 is 13321310031.

It is a happy number.

13001312331 is a `hidden beast` number, since 1 + 300 + 1 + 31 + 2 + 331 = 666.

It is not a de Polignac number, because 13001312331 - 2¹⁰ = 13001311307 is a prime.

It is a super-2 number, since 2×13001312331² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13001312333) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 43041 + ... + 166898.

It is an arithmetic number, because the mean of its divisors is an integer number (895184160).

Almost surely, 2^13001312331 is an apocalyptic number.

13001312331 is a deficient number, since it is larger than the sum of its proper divisors (8483107509).

13001312331 is a wasteful number, since it uses less digits than its factorization.

13001312331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210935 (or 210932 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

Adding to 13001312331 its reverse (13321310031), we get a palindrome (26322622362).

The spelling of 13001312331 in words is "thirteen billion, one million, three hundred twelve thousand, three hundred thirty-one".