131343232020401 has 4 divisors (see below), whose sum is σ = 135580110472704. Its totient is φ = 127106353568100.

The previous prime is 131343232020349. The next prime is 131343232020601. The reversal of 131343232020401 is 104020232343131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131343232020401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131343232020601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2118439226105 + ... + 2118439226166.

It is an arithmetic number, because the mean of its divisors is an integer number (33895027618176).

Almost surely, 2^{131343232020401} is an apocalyptic number.

It is an amenable number.

131343232020401 is a deficient number, since it is larger than the sum of its proper divisors (4236878452303).

131343232020401 is an equidigital number, since it uses as much as digits as its factorization.

131343232020401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4236878452302.

The product of its (nonzero) digits is 10368, while the sum is 29.

Adding to 131343232020401 its reverse (104020232343131), we get a palindrome (235363464363532).

The spelling of 131343232020401 in words is "one hundred thirty-one trillion, three hundred forty-three billion, two hundred thirty-two million, twenty thousand, four hundred one".