131201202400440 has 128 divisors (see below), whose sum is σ = 403919873683200. Its totient is φ = 34073017287680.

The previous prime is 131201202400381. The next prime is 131201202400507. The reversal of 131201202400440 is 44004202102131.

It is a super-2 number, since 2×131201202400440² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 131201202400440.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20912910 + ... + 26452829.

It is an arithmetic number, because the mean of its divisors is an integer number (3155624013150).

Almost surely, 2^{131201202400440} is an apocalyptic number.

131201202400440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131201202400440 is an abundant number, since it is smaller than the sum of its proper divisors (272718671282760).

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

131201202400440 is a wasteful number, since it uses less digits than its factorization.

131201202400440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47366357 (or 47366353 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 131201202400440 its reverse (44004202102131), we get a palindrome (175205404502571).

The spelling of 131201202400440 in words is "one hundred thirty-one trillion, two hundred one billion, two hundred two million, four hundred thousand, four hundred forty".