13011012331 has 4 divisors (see below), whose sum is σ = 13011322464. Its totient is φ = 13010702200.

The previous prime is 13011012293. The next prime is 13011012349. The reversal of 13011012331 is 13321011031.

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

It is a cyclic number.

It is not a de Polignac number, because 13011012331 - 2²⁹ = 12474141419 is a prime.

It is a super-2 number, since 2×13011012331² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13011012031) 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, 80035 + ... + 180076.

It is an arithmetic number, because the mean of its divisors is an integer number (3252830616).

Almost surely, 2^13011012331 is an apocalyptic number.

13011012331 is a deficient number, since it is larger than the sum of its proper divisors (310133).

13011012331 is an equidigital number, since it uses as much as digits as its factorization.

13011012331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310132.

The product of its (nonzero) digits is 54, while the sum is 16.

Adding to 13011012331 its reverse (13321011031), we get a palindrome (26332023362).

The spelling of 13011012331 in words is "thirteen billion, eleven million, twelve thousand, three hundred thirty-one".