131344223433431 has 4 divisors (see below), whose sum is σ = 131344804980264. Its totient is φ = 131343641886600.

The previous prime is 131344223433413. The next prime is 131344223433457. The reversal of 131344223433431 is 134334322443131.

It is a happy number.

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 131344223433431 - 2¹⁰ = 131344223432407 is a prime.

It is a super-2 number, since 2×131344223433431² (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 (131344223423431) 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, 290434505 + ... + 290886386.

It is an arithmetic number, because the mean of its divisors is an integer number (32836201245066).

Almost surely, 2^{131344223433431} is an apocalyptic number.

131344223433431 is a deficient number, since it is larger than the sum of its proper divisors (581546833).

131344223433431 is an equidigital number, since it uses as much as digits as its factorization.

131344223433431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 581546832.

The product of its digits is 746496, while the sum is 41.

Adding to 131344223433431 its reverse (134334322443131), we get a palindrome (265678545876562).

The spelling of 131344223433431 in words is "one hundred thirty-one trillion, three hundred forty-four billion, two hundred twenty-three million, four hundred thirty-three thousand, four hundred thirty-one".