131232220291 has 2 divisors, whose sum is σ = 131232220292. Its totient is φ = 131232220290.

The previous prime is 131232220283. The next prime is 131232220303. The reversal of 131232220291 is 192022232131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 131232220291 - 2³ = 131232220283 is a prime.

It is not a weakly prime, because it can be changed into another prime (131232220241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65616110145 + 65616110146.

It is an arithmetic number, because the mean of its divisors is an integer number (65616110146).

Almost surely, 2^131232220291 is an apocalyptic number.

131232220291 is a deficient number, since it is larger than the sum of its proper divisors (1).

131232220291 is an equidigital number, since it uses as much as digits as its factorization.

131232220291 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 28.

The spelling of 131232220291 in words is "one hundred thirty-one billion, two hundred thirty-two million, two hundred twenty thousand, two hundred ninety-one".