131220102193 has 2 divisors, whose sum is σ = 131220102194. Its totient is φ = 131220102192.

The previous prime is 131220102137. The next prime is 131220102199. The reversal of 131220102193 is 391201022131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 125562505104 + 5657597089 = 354348^2 + 75217^2 .

It is a cyclic number.

It is not a de Polignac number, because 131220102193 - 2⁹ = 131220101681 is a prime.

It is not a weakly prime, because it can be changed into another prime (131220102199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65610051096 + 65610051097.

It is an arithmetic number, because the mean of its divisors is an integer number (65610051097).

Almost surely, 2^131220102193 is an apocalyptic number.

It is an amenable number.

131220102193 is a deficient number, since it is larger than the sum of its proper divisors (1).

131220102193 is an equidigital number, since it uses as much as digits as its factorization.

131220102193 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 25.

The spelling of 131220102193 in words is "one hundred thirty-one billion, two hundred twenty million, one hundred two thousand, one hundred ninety-three".