136500031 has 2 divisors, whose sum is σ = 136500032. Its totient is φ = 136500030.

The previous prime is 136499983. The next prime is 136500043. The reversal of 136500031 is 130005631.

136500031 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 is a cyclic number.

It is not a de Polignac number, because 136500031 - 2⁷ = 136499903 is a prime.

It is a super-2 number, since 2×136500031² = 37264516926001922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 136499981 and 136500008.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136500061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68250015 + 68250016.

It is an arithmetic number, because the mean of its divisors is an integer number (68250016).

Almost surely, 2^136500031 is an apocalyptic number.

136500031 is a deficient number, since it is larger than the sum of its proper divisors (1).

136500031 is an equidigital number, since it uses as much as digits as its factorization.

136500031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 270, while the sum is 19.

The square root of 136500031 is about 11683.3227722254. The cubic root of 136500031 is about 514.8858024357.

Adding to 136500031 its reverse (130005631), we get a palindrome (266505662).

The spelling of 136500031 in words is "one hundred thirty-six million, five hundred thousand, thirty-one".