36231131 has 4 divisors (see below), whose sum is σ = 38362392. Its totient is φ = 34099872.

The previous prime is 36231127. The next prime is 36231137. The reversal of 36231131 is 13113263.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 36231131 - 2² = 36231127 is a prime.

It is a super-2 number, since 2×36231131² = 2625389707078322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (36231137) 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, 1065605 + ... + 1065638.

It is an arithmetic number, because the mean of its divisors is an integer number (9590598).

Almost surely, 2^36231131 is an apocalyptic number.

36231131 is a deficient number, since it is larger than the sum of its proper divisors (2131261).

36231131 is a wasteful number, since it uses less digits than its factorization.

36231131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2131260.

The product of its digits is 324, while the sum is 20.

The square root of 36231131 is about 6019.2301002703. The cubic root of 36231131 is about 330.8978640280.

Adding to 36231131 its reverse (13113263), we get a palindrome (49344394).

The spelling of 36231131 in words is "thirty-six million, two hundred thirty-one thousand, one hundred thirty-one".