131222233187 has 2 divisors, whose sum is σ = 131222233188. Its totient is φ = 131222233186.

The previous prime is 131222233171. The next prime is 131222233243. The reversal of 131222233187 is 781332222131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 131222233187 - 2⁴ = 131222233171 is a prime.

It is not a weakly prime, because it can be changed into another prime (131222233127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65611116593 + 65611116594.

It is an arithmetic number, because the mean of its divisors is an integer number (65611116594).

Almost surely, 2^131222233187 is an apocalyptic number.

131222233187 is a deficient number, since it is larger than the sum of its proper divisors (1).

131222233187 is an equidigital number, since it uses as much as digits as its factorization.

131222233187 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24192, while the sum is 35.

The spelling of 131222233187 in words is "one hundred thirty-one billion, two hundred twenty-two million, two hundred thirty-three thousand, one hundred eighty-seven".