136231873 has 2 divisors, whose sum is σ = 136231874. Its totient is φ = 136231872.

The previous prime is 136231861. The next prime is 136231877. The reversal of 136231873 is 378132631.

136231873 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 118984464 + 17247409 = 10908^2 + 4153^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136231873 is a prime.

It is not a weakly prime, because it can be changed into another prime (136231877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68115936 + 68115937.

It is an arithmetic number, because the mean of its divisors is an integer number (68115937).

Almost surely, 2^136231873 is an apocalyptic number.

It is an amenable number.

136231873 is a deficient number, since it is larger than the sum of its proper divisors (1).

136231873 is an equidigital number, since it uses as much as digits as its factorization.

136231873 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18144, while the sum is 34.

The square root of 136231873 is about 11671.8410287324. The cubic root of 136231873 is about 514.5484123770.

The spelling of 136231873 in words is "one hundred thirty-six million, two hundred thirty-one thousand, eight hundred seventy-three".