131142120400423 has 72 divisors (see below), whose sum is σ = 148244912514944. Its totient is φ = 115917689796480.

The previous prime is 131142120400393. The next prime is 131142120400427. The reversal of 131142120400423 is 324004021241131.

It is a happy number.

It is not a de Polignac number, because 131142120400423 - 2⁴⁵ = 95957748311591 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131142120400391 and 131142120400400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131142120400427) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 14746663765 + ... + 14746672657.

Almost surely, 2^{131142120400423} is an apocalyptic number.

131142120400423 is a deficient number, since it is larger than the sum of its proper divisors (17102792114521).

131142120400423 is a wasteful number, since it uses less digits than its factorization.

131142120400423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9413 (or 9343 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 131142120400423 its reverse (324004021241131), we get a palindrome (455146141641554).

The spelling of 131142120400423 in words is "one hundred thirty-one trillion, one hundred forty-two billion, one hundred twenty million, four hundred thousand, four hundred twenty-three".