13443412631 has 4 divisors (see below), whose sum is σ = 14665541064. Its totient is φ = 12221284200.

The previous prime is 13443412621. The next prime is 13443412639. The reversal of 13443412631 is 13621434431.

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 13443412631 - 2²² = 13439218327 is a prime.

It is a super-2 number, since 2×13443412631² (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 (13443412639) 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, 611064200 + ... + 611064221.

It is an arithmetic number, because the mean of its divisors is an integer number (3666385266).

Almost surely, 2^13443412631 is an apocalyptic number.

13443412631 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

13443412631 is a deficient number, since it is larger than the sum of its proper divisors (1222128433).

13443412631 is a wasteful number, since it uses less digits than its factorization.

13443412631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1222128432.

The product of its digits is 20736, while the sum is 32.

The spelling of 13443412631 in words is "thirteen billion, four hundred forty-three million, four hundred twelve thousand, six hundred thirty-one".