131220333271 has 2 divisors, whose sum is σ = 131220333272. Its totient is φ = 131220333270.

The previous prime is 131220333269. The next prime is 131220333281. The reversal of 131220333271 is 172333022131.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 131220333271 - 2¹ = 131220333269 is a prime.

Together with 131220333269, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131220333281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65610166635 + 65610166636.

It is an arithmetic number, because the mean of its divisors is an integer number (65610166636).

Almost surely, 2^131220333271 is an apocalyptic number.

131220333271 is a deficient number, since it is larger than the sum of its proper divisors (1).

131220333271 is an equidigital number, since it uses as much as digits as its factorization.

131220333271 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 28.

The spelling of 131220333271 in words is "one hundred thirty-one billion, two hundred twenty million, three hundred thirty-three thousand, two hundred seventy-one".