13439631223 has 4 divisors (see below), whose sum is σ = 13439865568. Its totient is φ = 13439396880.

The previous prime is 13439631187. The next prime is 13439631241. The reversal of 13439631223 is 32213693431.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13439631223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13439631263) 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, 33058 + ... + 167248.

It is an arithmetic number, because the mean of its divisors is an integer number (3359966392).

Almost surely, 2^13439631223 is an apocalyptic number.

13439631223 is a deficient number, since it is larger than the sum of its proper divisors (234345).

13439631223 is a wasteful number, since it uses less digits than its factorization.

13439631223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234344.

The product of its digits is 69984, while the sum is 37.

The spelling of 13439631223 in words is "thirteen billion, four hundred thirty-nine million, six hundred thirty-one thousand, two hundred twenty-three".