131020140021077 has 2 divisors, whose sum is σ = 131020140021078. Its totient is φ = 131020140021076.

The previous prime is 131020140021061. The next prime is 131020140021149. The reversal of 131020140021077 is 770120041020131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 94127077051921 + 36893062969156 = 9701911^2 + 6073966^2 .

It is a cyclic number.

It is not a de Polignac number, because 131020140021077 - 2⁴ = 131020140021061 is a prime.

It is a super-2 number, since 2×131020140021077² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131020140021007) 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, 65510070010538 + 65510070010539.

It is an arithmetic number, because the mean of its divisors is an integer number (65510070010539).

Almost surely, 2^{131020140021077} is an apocalyptic number.

It is an amenable number.

131020140021077 is a deficient number, since it is larger than the sum of its proper divisors (1).

131020140021077 is an equidigital number, since it uses as much as digits as its factorization.

131020140021077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2352, while the sum is 29.

The spelling of 131020140021077 in words is "one hundred thirty-one trillion, twenty billion, one hundred forty million, twenty-one thousand, seventy-seven".