13435957231 has 16 divisors (see below), whose sum is σ = 13877275104. Its totient is φ = 13002522624.

The previous prime is 13435957211. The next prime is 13435957247. The reversal of 13435957231 is 13275953431.

It is a cyclic number.

It is not a de Polignac number, because 13435957231 - 2¹⁹ = 13435432943 is a prime.

It is a super-2 number, since 2×13435957231² (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 (13435957211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1574031 + ... + 1582543.

It is an arithmetic number, because the mean of its divisors is an integer number (867329694).

Almost surely, 2^13435957231 is an apocalyptic number.

13435957231 is a deficient number, since it is larger than the sum of its proper divisors (441317873).

13435957231 is an equidigital number, since it uses as much as digits as its factorization.

13435957231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8970.

The product of its digits is 340200, while the sum is 43.

The spelling of 13435957231 in words is "thirteen billion, four hundred thirty-five million, nine hundred fifty-seven thousand, two hundred thirty-one".