131134421243 has 16 divisors (see below), whose sum is σ = 153078266880. Its totient is φ = 109993842816.

The previous prime is 131134421227. The next prime is 131134421267. The reversal of 131134421243 is 342124431131.

It is not a de Polignac number, because 131134421243 - 2⁴ = 131134421227 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131134421543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2697728 + ... + 2745906.

It is an arithmetic number, because the mean of its divisors is an integer number (9567391680).

Almost surely, 2^131134421243 is an apocalyptic number.

131134421243 is a deficient number, since it is larger than the sum of its proper divisors (21943845637).

131134421243 is an equidigital number, since it uses as much as digits as its factorization.

131134421243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56506.

The product of its digits is 6912, while the sum is 29.

Adding to 131134421243 its reverse (342124431131), we get a palindrome (473258852374).

The spelling of 131134421243 in words is "one hundred thirty-one billion, one hundred thirty-four million, four hundred twenty-one thousand, two hundred forty-three".