131443001400 has 96 divisors (see below), whose sum is σ = 407731425840. Its totient is φ = 35029263360.

The previous prime is 131443001399. The next prime is 131443001407. The reversal of 131443001400 is 4100344131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131443001407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 889612 + ... + 1026788.

Almost surely, 2^131443001400 is an apocalyptic number.

131443001400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131443001400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (203865712920).

131443001400 is an abundant number, since it is smaller than the sum of its proper divisors (276288424440).

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

131443001400 is a wasteful number, since it uses less digits than its factorization.

131443001400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138793 (or 138784 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 131443001400 its reverse (4100344131), we get a palindrome (135543345531).

The spelling of 131443001400 in words is "one hundred thirty-one billion, four hundred forty-three million, one thousand, four hundred".