136195931 has 2 divisors, whose sum is σ = 136195932. Its totient is φ = 136195930.

The previous prime is 136195907. The next prime is 136195957. The reversal of 136195931 is 139591631.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 136195931 - 2⁶ = 136195867 is a prime.

It is a super-4 number, since 4×136195931⁴ (a number of 34 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (136195901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68097965 + 68097966.

It is an arithmetic number, because the mean of its divisors is an integer number (68097966).

Almost surely, 2^136195931 is an apocalyptic number.

136195931 is a deficient number, since it is larger than the sum of its proper divisors (1).

136195931 is an equidigital number, since it uses as much as digits as its factorization.

136195931 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21870, while the sum is 38.

The square root of 136195931 is about 11670.3012386142. The cubic root of 136195931 is about 514.5031573637.

The spelling of 136195931 in words is "one hundred thirty-six million, one hundred ninety-five thousand, nine hundred thirty-one".