36081231 has 4 divisors (see below), whose sum is σ = 48108312. Its totient is φ = 24054152.

The previous prime is 36081229. The next prime is 36081251. The reversal of 36081231 is 13218063.

36081231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13218063 = 3 ⋅4406021.

It is a cyclic number.

It is not a de Polignac number, because 36081231 - 2¹ = 36081229 is a prime.

It is a super-2 number, since 2×36081231² = 2603710460950722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36081251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6013536 + ... + 6013541.

It is an arithmetic number, because the mean of its divisors is an integer number (12027078).

Almost surely, 2^36081231 is an apocalyptic number.

36081231 is a deficient number, since it is larger than the sum of its proper divisors (12027081).

36081231 is a wasteful number, since it uses less digits than its factorization.

36081231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12027080.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 36081231 is about 6006.7654357399. The cubic root of 36081231 is about 330.4408891182.

Adding to 36081231 its reverse (13218063), we get a palindrome (49299294).

The spelling of 36081231 in words is "thirty-six million, eighty-one thousand, two hundred thirty-one".