131421441431 has 4 divisors (see below), whose sum is σ = 150195933072. Its totient is φ = 112646949792.

The previous prime is 131421441427. The next prime is 131421441439. The reversal of 131421441431 is 134144124131.

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 131421441431 - 2² = 131421441427 is a prime.

It is a super-2 number, since 2×131421441431² (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 = 131421441394 and 131421441403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131421441439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9387245810 + ... + 9387245823.

It is an arithmetic number, because the mean of its divisors is an integer number (37548983268).

Almost surely, 2^131421441431 is an apocalyptic number.

131421441431 is a deficient number, since it is larger than the sum of its proper divisors (18774491641).

131421441431 is an equidigital number, since it uses as much as digits as its factorization.

131421441431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18774491640.

The product of its digits is 4608, while the sum is 29.

Adding to 131421441431 its reverse (134144124131), we get a palindrome (265565565562).

The spelling of 131421441431 in words is "one hundred thirty-one billion, four hundred twenty-one million, four hundred forty-one thousand, four hundred thirty-one".