36223531 has 4 divisors (see below), whose sum is σ = 37392064. Its totient is φ = 35055000.

The previous prime is 36223507. The next prime is 36223559. The reversal of 36223531 is 13532263.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13532263 = 797 ⋅16979.

It is a cyclic number.

It is not a de Polignac number, because 36223531 - 2¹³ = 36215339 is a prime.

It is a super-2 number, since 2×36223531² = 2624288396215922, 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 = 36223496 and 36223505.

It is not an unprimeable number, because it can be changed into a prime (36223571) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 584220 + ... + 584281.

It is an arithmetic number, because the mean of its divisors is an integer number (9348016).

Almost surely, 2^36223531 is an apocalyptic number.

36223531 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

36223531 is a deficient number, since it is larger than the sum of its proper divisors (1168533).

36223531 is a wasteful number, since it uses less digits than its factorization.

36223531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1168532.

The product of its digits is 3240, while the sum is 25.

The square root of 36223531 is about 6018.5987571859. The cubic root of 36223531 is about 330.8747255506.

Adding to 36223531 its reverse (13532263), we get a palindrome (49755794).

The spelling of 36223531 in words is "thirty-six million, two hundred twenty-three thousand, five hundred thirty-one".