136117831 has 2 divisors, whose sum is σ = 136117832. Its totient is φ = 136117830.

The previous prime is 136117819. The next prime is 136117867. The reversal of 136117831 is 138711631.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 136117831 - 2¹⁵ = 136085063 is a prime.

It is a super-2 number, since 2×136117831² = 37056127832289122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 136117793 and 136117802.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136117811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68058915 + 68058916.

It is an arithmetic number, because the mean of its divisors is an integer number (68058916).

Almost surely, 2^136117831 is an apocalyptic number.

136117831 is a deficient number, since it is larger than the sum of its proper divisors (1).

136117831 is an equidigital number, since it uses as much as digits as its factorization.

136117831 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3024, while the sum is 31.

The square root of 136117831 is about 11666.9546583502. The cubic root of 136117831 is about 514.4047932410.

The spelling of 136117831 in words is "one hundred thirty-six million, one hundred seventeen thousand, eight hundred thirty-one".