131201321434431 has 32 divisors (see below), whose sum is σ = 185147325081600. Its totient is φ = 82522806912000.

The previous prime is 131201321434397. The next prime is 131201321434481. The reversal of 131201321434431 is 134434123102131.

It is a happy number.

It is not a de Polignac number, because 131201321434431 - 2²¹ = 131201319337279 is a prime.

It is a super-2 number, since 2×131201321434431² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 131201321434392 and 131201321434401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131201321434481) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 97732195 + ... + 99065556.

It is an arithmetic number, because the mean of its divisors is an integer number (5785853908800).

Almost surely, 2^{131201321434431} is an apocalyptic number.

131201321434431 is a deficient number, since it is larger than the sum of its proper divisors (53946003647169).

131201321434431 is a wasteful number, since it uses less digits than its factorization.

131201321434431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196797959.

The product of its (nonzero) digits is 20736, while the sum is 33.

Adding to 131201321434431 its reverse (134434123102131), we get a palindrome (265635444536562).

The spelling of 131201321434431 in words is "one hundred thirty-one trillion, two hundred one billion, three hundred twenty-one million, four hundred thirty-four thousand, four hundred thirty-one".