131127777247 has 2 divisors, whose sum is σ = 131127777248. Its totient is φ = 131127777246.

The previous prime is 131127777139. The next prime is 131127777317. The reversal of 131127777247 is 742777721131.

It is a strong prime.

It is an emirp because it is prime and its reverse (742777721131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 131127777247 - 2⁷ = 131127777119 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 131127777247.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131127777647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65563888623 + 65563888624.

It is an arithmetic number, because the mean of its divisors is an integer number (65563888624).

Almost surely, 2^131127777247 is an apocalyptic number.

131127777247 is a deficient number, since it is larger than the sum of its proper divisors (1).

131127777247 is an equidigital number, since it uses as much as digits as its factorization.

131127777247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 806736, while the sum is 49.

The spelling of 131127777247 in words is "one hundred thirty-one billion, one hundred twenty-seven million, seven hundred seventy-seven thousand, two hundred forty-seven".