13432623431 has 4 divisors (see below), whose sum is σ = 13507666200. Its totient is φ = 13357580664.

The previous prime is 13432623377. The next prime is 13432623467.

13432623431 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 13432623431 - 2²² = 13428429127 is a prime.

It is a super-2 number, since 2×13432623431² (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 (13432623331) 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, 37521116 + ... + 37521473.

It is an arithmetic number, because the mean of its divisors is an integer number (3376916550).

Almost surely, 2^13432623431 is an apocalyptic number.

13432623431 is a deficient number, since it is larger than the sum of its proper divisors (75042769).

13432623431 is an equidigital number, since it uses as much as digits as its factorization.

13432623431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75042768.

The product of its digits is 31104, while the sum is 32.

The spelling of 13432623431 in words is "thirteen billion, four hundred thirty-two million, six hundred twenty-three thousand, four hundred thirty-one".