1138031 has 4 divisors (see below), whose sum is σ = 1204992. Its totient is φ = 1071072.

The previous prime is 1138019. The next prime is 1138057. The reversal of 1138031 is 1308311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1308311 = 179 ⋅7309.

It is a cyclic number.

It is not a de Polignac number, because 1138031 - 2¹⁰ = 1137007 is a prime.

It is a super-2 number, since 2×1138031² = 2590229113922, 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: 66943 = 1138031 / (1 + 1 + 3 + 8 + 0 + 3 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1138061) 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, 33455 + ... + 33488.

It is an arithmetic number, because the mean of its divisors is an integer number (301248).

2^1138031 is an apocalyptic number.

1138031 is a deficient number, since it is larger than the sum of its proper divisors (66961).

1138031 is an equidigital number, since it uses as much as digits as its factorization.

1138031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66960.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 1138031 is about 1066.7853579798. The cubic root of 1138031 is about 104.4042146339.

It can be divided in two parts, 11380 and 31, that added together give a palindrome (11411).

The spelling of 1138031 in words is "one million, one hundred thirty-eight thousand, thirty-one".