131143234333431 has 32 divisors (see below), whose sum is σ = 180026563571712. Its totient is φ = 84869447695200.

The previous prime is 131143234333399. The next prime is 131143234333547. The reversal of 131143234333431 is 134333432341131.

It is not a de Polignac number, because 131143234333431 - 2⁵ = 131143234333399 is a prime.

It is a super-2 number, since 2×131143234333431² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 131143234333431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131143230333431) 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, 1228995826 + ... + 1229102528.

It is an arithmetic number, because the mean of its divisors is an integer number (5625830111616).

Almost surely, 2^{131143234333431} is an apocalyptic number.

131143234333431 is a deficient number, since it is larger than the sum of its proper divisors (48883329238281).

131143234333431 is a wasteful number, since it uses less digits than its factorization.

131143234333431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165363.

The product of its digits is 279936, while the sum is 39.

Adding to 131143234333431 its reverse (134333432341131), we get a palindrome (265476666674562).

The spelling of 131143234333431 in words is "one hundred thirty-one trillion, one hundred forty-three billion, two hundred thirty-four million, three hundred thirty-three thousand, four hundred thirty-one".