131324135434 has 4 divisors (see below), whose sum is σ = 196986203154. Its totient is φ = 65662067716.

The previous prime is 131324135357. The next prime is 131324135447. The reversal of 131324135434 is 434531423131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 126133653409 + 5190482025 = 355153^2 + 72045^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 131324135434.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32831033857 + ... + 32831033860.

Almost surely, 2^131324135434 is an apocalyptic number.

131324135434 is a deficient number, since it is larger than the sum of its proper divisors (65662067720).

131324135434 is an equidigital number, since it uses as much as digits as its factorization.

131324135434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65662067719.

The product of its digits is 51840, while the sum is 34.

Adding to 131324135434 its reverse (434531423131), we get a palindrome (565855558565).

The spelling of 131324135434 in words is "one hundred thirty-one billion, three hundred twenty-four million, one hundred thirty-five thousand, four hundred thirty-four".