13203113431 has 4 divisors (see below), whose sum is σ = 13203971200. Its totient is φ = 13202255664.

The previous prime is 13203113419. The next prime is 13203113477. The reversal of 13203113431 is 13431130231.

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 13203113431 - 2⁷ = 13203113303 is a prime.

It is a super-2 number, since 2×13203113431² (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 (13203113491) 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, 405366 + ... + 436723.

It is an arithmetic number, because the mean of its divisors is an integer number (3300992800).

Almost surely, 2^13203113431 is an apocalyptic number.

13203113431 is a deficient number, since it is larger than the sum of its proper divisors (857769).

13203113431 is an equidigital number, since it uses as much as digits as its factorization.

13203113431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 857768.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 13203113431 its reverse (13431130231), we get a palindrome (26634243662).

The spelling of 13203113431 in words is "thirteen billion, two hundred three million, one hundred thirteen thousand, four hundred thirty-one".