13203140231 has 4 divisors (see below), whose sum is σ = 13210522200. Its totient is φ = 13195758264.

The previous prime is 13203140227. The next prime is 13203140263. The reversal of 13203140231 is 13204130231.

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 13203140231 - 2² = 13203140227 is a prime.

It is a super-2 number, since 2×13203140231² (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 (13203140201) 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, 3688301 + ... + 3691878.

It is an arithmetic number, because the mean of its divisors is an integer number (3302630550).

Almost surely, 2^13203140231 is an apocalyptic number.

13203140231 is a deficient number, since it is larger than the sum of its proper divisors (7381969).

13203140231 is an equidigital number, since it uses as much as digits as its factorization.

13203140231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7381968.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 13203140231 its reverse (13204130231), we get a palindrome (26407270462).

The spelling of 13203140231 in words is "thirteen billion, two hundred three million, one hundred forty thousand, two hundred thirty-one".