13443131900 has 36 divisors (see below), whose sum is σ = 31823562120. Its totient is φ = 4888411200.

The previous prime is 13443131899. The next prime is 13443131903. The reversal of 13443131900 is 913134431.

It is a super-2 number, since 2×13443131900² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13443131903) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6109415 + ... + 6111614.

Almost surely, 2^13443131900 is an apocalyptic number.

13443131900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13443131900 is an abundant number, since it is smaller than the sum of its proper divisors (18380430220).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13443131900 is a wasteful number, since it uses less digits than its factorization.

13443131900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12221054 (or 12221047 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 29.

The spelling of 13443131900 in words is "thirteen billion, four hundred forty-three million, one hundred thirty-one thousand, nine hundred".