131220521983 has 2 divisors, whose sum is σ = 131220521984. Its totient is φ = 131220521982.

The previous prime is 131220521969. The next prime is 131220522031. The reversal of 131220521983 is 389125022131.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 131220521983 - 2²⁵ = 131186967551 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131220521903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65610260991 + 65610260992.

It is an arithmetic number, because the mean of its divisors is an integer number (65610260992).

Almost surely, 2^131220521983 is an apocalyptic number.

131220521983 is a deficient number, since it is larger than the sum of its proper divisors (1).

131220521983 is an equidigital number, since it uses as much as digits as its factorization.

131220521983 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 37.

The spelling of 131220521983 in words is "one hundred thirty-one billion, two hundred twenty million, five hundred twenty-one thousand, nine hundred eighty-three".