13023131331 has 8 divisors (see below), whose sum is σ = 19844771584. Its totient is φ = 7441789320.

The previous prime is 13023131311. The next prime is 13023131371. The reversal of 13023131331 is 13313132031.

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

It is not a de Polignac number, because 13023131331 - 2⁶ = 13023131267 is a prime.

It is a super-2 number, since 2×13023131331² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 620149111 = 13023131331 / (1 + 3 + 0 + 2 + 3 + 1 + 3 + 1 + 3 + 3 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13023131298 and 13023131307.

It is not an unprimeable number, because it can be changed into a prime (13023131311) 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, 310074535 + ... + 310074576.

It is an arithmetic number, because the mean of its divisors is an integer number (2480596448).

Almost surely, 2^13023131331 is an apocalyptic number.

13023131331 is a deficient number, since it is larger than the sum of its proper divisors (6821640253).

13023131331 is an equidigital number, since it uses as much as digits as its factorization.

13023131331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 620149121.

The product of its (nonzero) digits is 486, while the sum is 21.

Adding to 13023131331 its reverse (13313132031), we get a palindrome (26336263362).

The spelling of 13023131331 in words is "thirteen billion, twenty-three million, one hundred thirty-one thousand, three hundred thirty-one".