131201432223401 has 16 divisors (see below), whose sum is σ = 136386496017408. Its totient is φ = 126208828992960.

The previous prime is 131201432223373. The next prime is 131201432223413. The reversal of 131201432223401 is 104322234102131.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-131201432223401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131201432223101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8210720 + ... + 18160913.

It is an arithmetic number, because the mean of its divisors is an integer number (8524156001088).

Almost surely, 2^{131201432223401} is an apocalyptic number.

It is an amenable number.

131201432223401 is a deficient number, since it is larger than the sum of its proper divisors (5185063794007).

131201432223401 is an frugal number, since it uses more digits than its factorization.

131201432223401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26371893 (or 26371831 counting only the distinct ones).

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

Adding to 131201432223401 its reverse (104322234102131), we get a palindrome (235523666325532).

The spelling of 131201432223401 in words is "one hundred thirty-one trillion, two hundred one billion, four hundred thirty-two million, two hundred twenty-three thousand, four hundred one".