13312022231 has 4 divisors (see below), whose sum is σ = 14012655000. Its totient is φ = 12611389464.

The previous prime is 13312022209. The next prime is 13312022371. The reversal of 13312022231 is 13222021331.

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 13312022231 - 2⁶ = 13312022167 is a prime.

It is a super-2 number, since 2×13312022231² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13312022831) 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, 350316356 + ... + 350316393.

It is an arithmetic number, because the mean of its divisors is an integer number (3503163750).

Almost surely, 2^13312022231 is an apocalyptic number.

13312022231 is a deficient number, since it is larger than the sum of its proper divisors (700632769).

13312022231 is an equidigital number, since it uses as much as digits as its factorization.

13312022231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 700632768.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 13312022231 its reverse (13222021331), we get a palindrome (26534043562).

The spelling of 13312022231 in words is "thirteen billion, three hundred twelve million, twenty-two thousand, two hundred thirty-one".