13012322231 has 4 divisors (see below), whose sum is σ = 13105936200. Its totient is φ = 12918708264.

The previous prime is 13012322221. The next prime is 13012322237. The reversal of 13012322231 is 13222321031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13222321031 = 6379 ⋅2072789.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13012322231 is a prime.

It is a super-2 number, since 2×13012322231² (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 (13012322237) 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, 46806776 + ... + 46807053.

It is an arithmetic number, because the mean of its divisors is an integer number (3276484050).

Almost surely, 2^13012322231 is an apocalyptic number.

13012322231 is a deficient number, since it is larger than the sum of its proper divisors (93613969).

13012322231 is an equidigital number, since it uses as much as digits as its factorization.

13012322231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93613968.

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

Adding to 13012322231 its reverse (13222321031), we get a palindrome (26234643262).

The spelling of 13012322231 in words is "thirteen billion, twelve million, three hundred twenty-two thousand, two hundred thirty-one".