13312643231 has 4 divisors (see below), whose sum is σ = 13314130272. Its totient is φ = 13311156192.

The previous prime is 13312643221. The next prime is 13312643257. The reversal of 13312643231 is 13234621331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13234621331 = 701 ⋅18879631.

It is a cyclic number.

It is not a de Polignac number, because 13312643231 - 2¹⁰ = 13312642207 is a prime.

It is a super-2 number, since 2×13312643231² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13312643194 and 13312643203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13312643221) 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, 730010 + ... + 748023.

It is an arithmetic number, because the mean of its divisors is an integer number (3328532568).

Almost surely, 2^13312643231 is an apocalyptic number.

13312643231 is a deficient number, since it is larger than the sum of its proper divisors (1487041).

13312643231 is an equidigital number, since it uses as much as digits as its factorization.

13312643231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1487040.

The product of its digits is 7776, while the sum is 29.

The spelling of 13312643231 in words is "thirteen billion, three hundred twelve million, six hundred forty-three thousand, two hundred thirty-one".