36431 has 4 divisors (see below), whose sum is σ = 38592. Its totient is φ = 34272.

The previous prime is 36389. The next prime is 36433. The reversal of 36431 is 13463.

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

It is not a de Polignac number, because 36431 - 2¹⁰ = 35407 is a prime.

It is a super-2 number, since 2×36431² = 2654435522, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 2143 = 36431 / (3 + 6 + 4 + 3 + 1).

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 36431.

It is not an unprimeable number, because it can be changed into a prime (36433) 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, 1055 + ... + 1088.

It is an arithmetic number, because the mean of its divisors is an integer number (9648).

2³⁶⁴³¹ is an apocalyptic number.

36431 is a deficient number, since it is larger than the sum of its proper divisors (2161).

36431 is a wasteful number, since it uses less digits than its factorization.

36431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2160.

The product of its digits is 216, while the sum is 17.

The square root of 36431 is about 190.8690650682. The cubic root of 36431 is about 33.1505214496.

Adding to 36431 its reverse (13463), we get a palindrome (49894).

The spelling of 36431 in words is "thirty-six thousand, four hundred thirty-one".