131201321434440 has 64 divisors (see below), whose sum is σ = 393611170901760. Its totient is φ = 34986378462720.

The previous prime is 131201321434397. The next prime is 131201321434481. The reversal of 131201321434440 is 44434123102131.

It is a happy number.

It is a super-2 number, since 2×131201321434440² (a number of 29 digits) contains 22 as substring.

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 15 ways as a sum of consecutive naturals, for example, 3409741 + ... + 16553820.

It is an arithmetic number, because the mean of its divisors is an integer number (6150174545340).

Almost surely, 2^{131201321434440} is an apocalyptic number.

131201321434440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131201321434440 is an abundant number, since it is smaller than the sum of its proper divisors (262409849467320).

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

131201321434440 is a wasteful number, since it uses less digits than its factorization.

131201321434440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20018342 (or 20018338 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 33.

Adding to 131201321434440 its reverse (44434123102131), we get a palindrome (175635444536571).

The spelling of 131201321434440 in words is "one hundred thirty-one trillion, two hundred one billion, three hundred twenty-one million, four hundred thirty-four thousand, four hundred forty".