131201321131431 has 32 divisors (see below), whose sum is σ = 195777646937600. Its totient is φ = 86835198450240.

The previous prime is 131201321131427. The next prime is 131201321131469. The reversal of 131201321131431 is 134131123102131.

131201321131431 is a `hidden beast` number, since 1 + 3 + 1 + 2 + 0 + 13 + 211 + 3 + 1 + 431 = 666.

It is not a de Polignac number, because 131201321131431 - 2² = 131201321131427 is a prime.

It is a super-2 number, since 2×131201321131431² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131201321131395 and 131201321131404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131201321131421) 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, 107505891 + ... + 108719451.

It is an arithmetic number, because the mean of its divisors is an integer number (6118051466800).

Almost surely, 2^{131201321131431} is an apocalyptic number.

131201321131431 is a deficient number, since it is larger than the sum of its proper divisors (64576325806169).

131201321131431 is a wasteful number, since it uses less digits than its factorization.

131201321131431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1242516 (or 1242510 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

Adding to 131201321131431 its reverse (134131123102131), we get a palindrome (265332444233562).

The spelling of 131201321131431 in words is "one hundred thirty-one trillion, two hundred one billion, three hundred twenty-one million, one hundred thirty-one thousand, four hundred thirty-one".