13253235231 has 4 divisors (see below), whose sum is σ = 17670980312. Its totient is φ = 8835490152.

The previous prime is 13253235223. The next prime is 13253235253.

It is a happy number.

13253235231 is nontrivially palindromic in base 10.

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

It is not a de Polignac number, because 13253235231 - 2³ = 13253235223 is a prime.

It is a super-2 number, since 2×13253235231² (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 (13253235271) 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, 2208872536 + ... + 2208872541.

It is an arithmetic number, because the mean of its divisors is an integer number (4417745078).

Almost surely, 2^13253235231 is an apocalyptic number.

13253235231 is a deficient number, since it is larger than the sum of its proper divisors (4417745081).

13253235231 is an equidigital number, since it uses as much as digits as its factorization.

13253235231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4417745080.

The product of its digits is 16200, while the sum is 30.

The spelling of 13253235231 in words is "thirteen billion, two hundred fifty-three million, two hundred thirty-five thousand, two hundred thirty-one".