13465856431 has 4 divisors (see below), whose sum is σ = 13469211000. Its totient is φ = 13462501864.

The previous prime is 13465856429. The next prime is 13465856471.

13465856431 is nontrivially palindromic in base 10.

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 13465856431 - 2¹ = 13465856429 is a prime.

It is a super-2 number, since 2×13465856431² (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 (13465856471) 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, 1671256 + ... + 1679293.

It is an arithmetic number, because the mean of its divisors is an integer number (3367302750).

Almost surely, 2^13465856431 is an apocalyptic number.

13465856431 is a deficient number, since it is larger than the sum of its proper divisors (3354569).

13465856431 is an equidigital number, since it uses as much as digits as its factorization.

13465856431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3354568.

The product of its digits is 1036800, while the sum is 46.

The spelling of 13465856431 in words is "thirteen billion, four hundred sixty-five million, eight hundred fifty-six thousand, four hundred thirty-one".