36187231 has 2 divisors, whose sum is σ = 36187232. Its totient is φ = 36187230.

The previous prime is 36187187. The next prime is 36187241. The reversal of 36187231 is 13278163.

It is a strong prime.

It is an emirp because it is prime and its reverse (13278163) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 36187231 - 2¹¹ = 36185183 is a prime.

It is a super-2 number, since 2×36187231² = 2619031374894722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 36187193 and 36187202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36187241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18093615 + 18093616.

It is an arithmetic number, because the mean of its divisors is an integer number (18093616).

Almost surely, 2^36187231 is an apocalyptic number.

36187231 is a deficient number, since it is larger than the sum of its proper divisors (1).

36187231 is an equidigital number, since it uses as much as digits as its factorization.

36187231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6048, while the sum is 31.

The square root of 36187231 is about 6015.5823491995. The cubic root of 36187231 is about 330.7641642066.

The spelling of 36187231 in words is "thirty-six million, one hundred eighty-seven thousand, two hundred thirty-one".