131431143431 has 4 divisors (see below), whose sum is σ = 150207021072. Its totient is φ = 112655265792.

The previous prime is 131431143391. The next prime is 131431143497. The reversal of 131431143431 is 134341134131.

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 131431143431 - 2³⁰ = 130357401607 is a prime.

It is a super-2 number, since 2×131431143431² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131431143394 and 131431143403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131431143031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9387938810 + ... + 9387938823.

It is an arithmetic number, because the mean of its divisors is an integer number (37551755268).

Almost surely, 2^131431143431 is an apocalyptic number.

131431143431 is a deficient number, since it is larger than the sum of its proper divisors (18775877641).

131431143431 is an equidigital number, since it uses as much as digits as its factorization.

131431143431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18775877640.

The product of its digits is 5184, while the sum is 29.

Adding to 131431143431 its reverse (134341134131), we get a palindrome (265772277562).

The spelling of 131431143431 in words is "one hundred thirty-one billion, four hundred thirty-one million, one hundred forty-three thousand, four hundred thirty-one".