131000320200400 has 120 divisors (see below), whose sum is σ = 364755499761024. Its totient is φ = 44281798310400.

The previous prime is 131000320200353. The next prime is 131000320200461. The reversal of 131000320200400 is 4002023000131.

It is a happy number.

It is a super-2 number, since 2×131000320200400² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 329278867 + ... + 329676466.

Almost surely, 2^{131000320200400} is an apocalyptic number.

131000320200400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131000320200400 is an abundant number, since it is smaller than the sum of its proper divisors (233755179560624).

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

131000320200400 is a wasteful number, since it uses less digits than its factorization.

131000320200400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 658955429 (or 658955418 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 131000320200400 its reverse (4002023000131), we get a palindrome (135002343200531).

The spelling of 131000320200400 in words is "one hundred thirty-one trillion, three hundred twenty million, two hundred thousand, four hundred".