131340240233431 has 4 divisors (see below), whose sum is σ = 132285134048200. Its totient is φ = 130395346418664.

The previous prime is 131340240233407. The next prime is 131340240233467. The reversal of 131340240233431 is 134332042043131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 131340240233431 - 2⁹ = 131340240232919 is a prime.

It is a super-2 number, since 2×131340240233431² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131340240233231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 472446907176 + ... + 472446907453.

It is an arithmetic number, because the mean of its divisors is an integer number (33071283512050).

Almost surely, 2^{131340240233431} is an apocalyptic number.

131340240233431 is a deficient number, since it is larger than the sum of its proper divisors (944893814769).

131340240233431 is an equidigital number, since it uses as much as digits as its factorization.

131340240233431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 944893814768.

The product of its (nonzero) digits is 62208, while the sum is 34.

Adding to 131340240233431 its reverse (134332042043131), we get a palindrome (265672282276562).

The spelling of 131340240233431 in words is "one hundred thirty-one trillion, three hundred forty billion, two hundred forty million, two hundred thirty-three thousand, four hundred thirty-one".