131401222420431 has 32 divisors (see below), whose sum is σ = 177900155315712. Its totient is φ = 86262004684800.

The previous prime is 131401222420421. The next prime is 131401222420439. The reversal of 131401222420431 is 134024222104131.

It is a happy number.

It is not a de Polignac number, because 131401222420431 - 2⁴¹ = 129202199164879 is a prime.

It is a super-2 number, since 2×131401222420431² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131401222420439) 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, 154350366 + ... + 155199348.

It is an arithmetic number, because the mean of its divisors is an integer number (5559379853616).

Almost surely, 2^{131401222420431} is an apocalyptic number.

131401222420431 is a deficient number, since it is larger than the sum of its proper divisors (46498932895281).

131401222420431 is a wasteful number, since it uses less digits than its factorization.

131401222420431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 852063.

The product of its (nonzero) digits is 9216, while the sum is 30.

Adding to 131401222420431 its reverse (134024222104131), we get a palindrome (265425444524562).

The spelling of 131401222420431 in words is "one hundred thirty-one trillion, four hundred one billion, two hundred twenty-two million, four hundred twenty thousand, four hundred thirty-one".