131231344431243 has 32 divisors (see below), whose sum is σ = 205240609147392. Its totient is φ = 73020445228800.

The previous prime is 131231344431197. The next prime is 131231344431289. The reversal of 131231344431243 is 342134443132131.

It is an interprime number because it is at equal distance from previous prime (131231344431197) and next prime (131231344431289).

It is not a de Polignac number, because 131231344431243 - 2⁸ = 131231344430987 is a prime.

It is a super-2 number, since 2×131231344431243² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (131231344231243) 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, 145264188 + ... + 146164793.

It is an arithmetic number, because the mean of its divisors is an integer number (6413769035856).

Almost surely, 2^{131231344431243} is an apocalyptic number.

131231344431243 is a deficient number, since it is larger than the sum of its proper divisors (74009264716149).

131231344431243 is a wasteful number, since it uses less digits than its factorization.

131231344431243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291429555.

The product of its digits is 248832, while the sum is 39.

Adding to 131231344431243 its reverse (342134443132131), we get a palindrome (473365787563374).

The spelling of 131231344431243 in words is "one hundred thirty-one trillion, two hundred thirty-one billion, three hundred forty-four million, four hundred thirty-one thousand, two hundred forty-three".