136231877 has 2 divisors, whose sum is σ = 136231878. Its totient is φ = 136231876.

The previous prime is 136231873. The next prime is 136231981. The reversal of 136231877 is 778132631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 133841761 + 2390116 = 11569^2 + 1546^2 .

It is a cyclic number.

It is not a de Polignac number, because 136231877 - 2² = 136231873 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 136231877.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136231873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68115938 + 68115939.

It is an arithmetic number, because the mean of its divisors is an integer number (68115939).

Almost surely, 2^136231877 is an apocalyptic number.

It is an amenable number.

136231877 is a deficient number, since it is larger than the sum of its proper divisors (1).

136231877 is an equidigital number, since it uses as much as digits as its factorization.

136231877 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 42336, while the sum is 38.

The square root of 136231877 is about 11671.8412000849. The cubic root of 136231877 is about 514.5484174131.

The spelling of 136231877 in words is "one hundred thirty-six million, two hundred thirty-one thousand, eight hundred seventy-seven".