36223131 has 16 divisors (see below), whose sum is σ = 56544768. Its totient is φ = 20193600.

The previous prime is 36223127. The next prime is 36223133. The reversal of 36223131 is 13132263.

It is not a de Polignac number, because 36223131 - 2² = 36223127 is a prime.

It is a super-2 number, since 2×36223131² = 2624230438886322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 36223098 and 36223107.

It is not an unprimeable number, because it can be changed into a prime (36223133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20175 + ... + 21896.

It is an arithmetic number, because the mean of its divisors is an integer number (3534048).

Almost surely, 2^36223131 is an apocalyptic number.

36223131 is a deficient number, since it is larger than the sum of its proper divisors (20321637).

36223131 is a wasteful number, since it uses less digits than its factorization.

36223131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42122.

The product of its digits is 648, while the sum is 21.

The square root of 36223131 is about 6018.5655267680. The cubic root of 36223131 is about 330.8735076463.

Adding to 36223131 its reverse (13132263), we get a palindrome (49355394).

The spelling of 36223131 in words is "thirty-six million, two hundred twenty-three thousand, one hundred thirty-one".