36131243 has 4 divisors (see below), whose sum is σ = 36391320. Its totient is φ = 35871168.

The previous prime is 36131237. The next prime is 36131257. The reversal of 36131243 is 34213163.

36131243 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.

It is a cyclic number.

It is not a de Polignac number, because 36131243 - 2²⁰ = 35082667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (36131233) 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, 129830 + ... + 130107.

It is an arithmetic number, because the mean of its divisors is an integer number (9097830).

Almost surely, 2^36131243 is an apocalyptic number.

36131243 is a deficient number, since it is larger than the sum of its proper divisors (260077).

36131243 is a wasteful number, since it uses less digits than its factorization.

36131243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260076.

The product of its digits is 1296, while the sum is 23.

The square root of 36131243 is about 6010.9269667831. The cubic root of 36131243 is about 330.5934927446.

The spelling of 36131243 in words is "thirty-six million, one hundred thirty-one thousand, two hundred forty-three".