918031 has 4 divisors (see below), whose sum is σ = 940464. Its totient is φ = 895600.

The previous prime is 918019. The next prime is 918041. The reversal of 918031 is 130819.

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 918031 - 2⁹ = 917519 is a prime.

It is a super-2 number, since 2×918031² = 1685561833922, which contains 22 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 917993 and 918011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (918011) 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, 11155 + ... + 11236.

It is an arithmetic number, because the mean of its divisors is an integer number (235116).

2⁹¹⁸⁰³¹ is an apocalyptic number.

918031 is a deficient number, since it is larger than the sum of its proper divisors (22433).

918031 is a wasteful number, since it uses less digits than its factorization.

918031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22432.

The product of its (nonzero) digits is 216, while the sum is 22.

The square root of 918031 is about 958.1393426846. The cubic root of 918031 is about 97.1894480126.

The spelling of 918031 in words is "nine hundred eighteen thousand, thirty-one".