13443434431 has 8 divisors (see below), whose sum is σ = 15615793184. Its totient is φ = 11334042720.

The previous prime is 13443434429. The next prime is 13443434467.

13443434431 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13443434431 - 2¹ = 13443434429 is a prime.

It is a super-2 number, since 2×13443434431² (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 (13443434491) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15741300 + ... + 15742153.

It is an arithmetic number, because the mean of its divisors is an integer number (1951974148).

Almost surely, 2^13443434431 is an apocalyptic number.

13443434431 is a deficient number, since it is larger than the sum of its proper divisors (2172358753).

13443434431 is an equidigital number, since it uses as much as digits as its factorization.

13443434431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31483521.

The product of its digits is 82944, while the sum is 34.

The spelling of 13443434431 in words is "thirteen billion, four hundred forty-three million, four hundred thirty-four thousand, four hundred thirty-one".