131434221518 has 4 divisors (see below), whose sum is σ = 197151332280. Its totient is φ = 65717110758.

The previous prime is 131434221427. The next prime is 131434221547. The reversal of 131434221518 is 815122434131.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32858555378 + ... + 32858555381.

It is an arithmetic number, because the mean of its divisors is an integer number (49287833070).

Almost surely, 2^131434221518 is an apocalyptic number.

131434221518 is a deficient number, since it is larger than the sum of its proper divisors (65717110762).

131434221518 is an equidigital number, since it uses as much as digits as its factorization.

131434221518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65717110761.

The product of its digits is 23040, while the sum is 35.

Adding to 131434221518 its reverse (815122434131), we get a palindrome (946556655649).

The spelling of 131434221518 in words is "one hundred thirty-one billion, four hundred thirty-four million, two hundred twenty-one thousand, five hundred eighteen".