131740239121 has 2 divisors, whose sum is σ = 131740239122. Its totient is φ = 131740239120.

The previous prime is 131740239119. The next prime is 131740239149. The reversal of 131740239121 is 121932047131.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 131525176896 + 215062225 = 362664^2 + 14665^2 .

It is a cyclic number.

It is not a de Polignac number, because 131740239121 - 2¹ = 131740239119 is a prime.

Together with 131740239119, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (131740239221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65870119560 + 65870119561.

It is an arithmetic number, because the mean of its divisors is an integer number (65870119561).

Almost surely, 2^131740239121 is an apocalyptic number.

It is an amenable number.

131740239121 is a deficient number, since it is larger than the sum of its proper divisors (1).

131740239121 is an equidigital number, since it uses as much as digits as its factorization.

131740239121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 34.

The spelling of 131740239121 in words is "one hundred thirty-one billion, seven hundred forty million, two hundred thirty-nine thousand, one hundred twenty-one".