36227731 has 4 divisors (see below), whose sum is σ = 38358792. Its totient is φ = 34096672.

The previous prime is 36227707. The next prime is 36227743. The reversal of 36227731 is 13772263.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-36227731 is a prime.

It is a super-2 number, since 2×36227731² = 2624896986816722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 36227693 and 36227702.

It is not an unprimeable number, because it can be changed into a prime (36227701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1065505 + ... + 1065538.

It is an arithmetic number, because the mean of its divisors is an integer number (9589698).

Almost surely, 2^36227731 is an apocalyptic number.

36227731 is a deficient number, since it is larger than the sum of its proper divisors (2131061).

36227731 is a wasteful number, since it uses less digits than its factorization.

36227731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2131060.

The product of its digits is 10584, while the sum is 31.

The square root of 36227731 is about 6018.9476654977. The cubic root of 36227731 is about 330.8875130039.

Adding to 36227731 its reverse (13772263), we get a palindrome (49999994).

The spelling of 36227731 in words is "thirty-six million, two hundred twenty-seven thousand, seven hundred thirty-one".