131201432223421 has 64 divisors (see below), whose sum is σ = 156214157299200. Its totient is φ = 107814074167296.

The previous prime is 131201432223413. The next prime is 131201432223457. The reversal of 131201432223421 is 124322234102131.

It is not a de Polignac number, because 131201432223421 - 2³ = 131201432223413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131201432223221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 56821753815 + ... + 56821756123.

It is an arithmetic number, because the mean of its divisors is an integer number (2440846207800).

Almost surely, 2^{131201432223421} is an apocalyptic number.

It is an amenable number.

131201432223421 is a deficient number, since it is larger than the sum of its proper divisors (25012725075779).

131201432223421 is a wasteful number, since it uses less digits than its factorization.

131201432223421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5398.

The product of its (nonzero) digits is 13824, while the sum is 31.

Adding to 131201432223421 its reverse (124322234102131), we get a palindrome (255523666325552).

The spelling of 131201432223421 in words is "one hundred thirty-one trillion, two hundred one billion, four hundred thirty-two million, two hundred twenty-three thousand, four hundred twenty-one".