131103223032245 has 4 divisors (see below), whose sum is σ = 157323867638700. Its totient is φ = 104882578425792.

The previous prime is 131103223032227. The next prime is 131103223032247. The reversal of 131103223032245 is 542230322301131.

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 92202667337284 + 38900555694961 = 9602222^2 + 6237031^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131103223032245 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131103223032247) 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, 13110322303220 + ... + 13110322303229.

It is an arithmetic number, because the mean of its divisors is an integer number (39330966909675).

Almost surely, 2^{131103223032245} is an apocalyptic number.

It is an amenable number.

131103223032245 is a deficient number, since it is larger than the sum of its proper divisors (26220644606455).

131103223032245 is an equidigital number, since it uses as much as digits as its factorization.

131103223032245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26220644606454.

The product of its (nonzero) digits is 25920, while the sum is 32.

Adding to 131103223032245 its reverse (542230322301131), we get a palindrome (673333545333376).

The spelling of 131103223032245 in words is "one hundred thirty-one trillion, one hundred three billion, two hundred twenty-three million, thirty-two thousand, two hundred forty-five".