36667231 has 2 divisors, whose sum is σ = 36667232. Its totient is φ = 36667230.

The previous prime is 36667229. The next prime is 36667237. The reversal of 36667231 is 13276663.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 36667231 - 2¹ = 36667229 is a prime.

It is a super-2 number, since 2×36667231² = 2688971658414722, which contains 22 as substring.

Together with 36667229, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36667237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18333615 + 18333616.

It is an arithmetic number, because the mean of its divisors is an integer number (18333616).

Almost surely, 2^36667231 is an apocalyptic number.

36667231 is a deficient number, since it is larger than the sum of its proper divisors (1).

36667231 is an equidigital number, since it uses as much as digits as its factorization.

36667231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27216, while the sum is 34.

The square root of 36667231 is about 6055.3473063070. The cubic root of 36667231 is about 332.2202021770.

The spelling of 36667231 in words is "thirty-six million, six hundred sixty-seven thousand, two hundred thirty-one".