13247746231 has 4 divisors (see below), whose sum is σ = 13263843952. Its totient is φ = 13231648512.

The previous prime is 13247746229. The next prime is 13247746261. The reversal of 13247746231 is 13264774231.

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 13247746231 - 2¹ = 13247746229 is a prime.

It is a super-2 number, since 2×13247746231² (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 (13247746261) 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, 8047626 + ... + 8049271.

It is an arithmetic number, because the mean of its divisors is an integer number (3315960988).

Almost surely, 2^13247746231 is an apocalyptic number.

13247746231 is a deficient number, since it is larger than the sum of its proper divisors (16097721).

13247746231 is an equidigital number, since it uses as much as digits as its factorization.

13247746231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16097720.

The product of its digits is 169344, while the sum is 40.

The spelling of 13247746231 in words is "thirteen billion, two hundred forty-seven million, seven hundred forty-six thousand, two hundred thirty-one".