131233444221241 has 4 divisors (see below), whose sum is σ = 131233476511732. Its totient is φ = 131233411930752.

The previous prime is 131233444221221. The next prime is 131233444221259. The reversal of 131233444221241 is 142122444332131.

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

It can be written as a sum of positive squares in 2 ways, for example, as 60911718723216 + 70321725498025 = 7804596^2 + 8385805^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131233444221241 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 131233444221241.

It is not an unprimeable number, because it can be changed into a prime (131233444221221) 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, 8992836 + ... + 18529381.

It is an arithmetic number, because the mean of its divisors is an integer number (32808369127933).

Almost surely, 2^{131233444221241} is an apocalyptic number.

It is an amenable number.

131233444221241 is a deficient number, since it is larger than the sum of its proper divisors (32290491).

131233444221241 is an equidigital number, since it uses as much as digits as its factorization.

131233444221241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32290490.

The product of its digits is 110592, while the sum is 37.

Adding to 131233444221241 its reverse (142122444332131), we get a palindrome (273355888553372).

The spelling of 131233444221241 in words is "one hundred thirty-one trillion, two hundred thirty-three billion, four hundred forty-four million, two hundred twenty-one thousand, two hundred forty-one".