13203423310431 has 4 divisors (see below), whose sum is σ = 17604564413912. Its totient is φ = 8802282206952.

The previous prime is 13203423310417. The next prime is 13203423310477. The reversal of 13203423310431 is 13401332430231.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-13203423310431 is a prime.

It is a super-2 number, since 2×13203423310431² (a number of 27 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 (13203423311431) 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, 2200570551736 + ... + 2200570551741.

It is an arithmetic number, because the mean of its divisors is an integer number (4401141103478).

Almost surely, 2^{13203423310431} is an apocalyptic number.

13203423310431 is a deficient number, since it is larger than the sum of its proper divisors (4401141103481).

13203423310431 is an equidigital number, since it uses as much as digits as its factorization.

13203423310431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4401141103480.

The product of its (nonzero) digits is 15552, while the sum is 30.

Adding to 13203423310431 its reverse (13401332430231), we get a palindrome (26604755740662).

The spelling of 13203423310431 in words is "thirteen trillion, two hundred three billion, four hundred twenty-three million, three hundred ten thousand, four hundred thirty-one".