1031143 has 4 divisors (see below), whose sum is σ = 1048680. Its totient is φ = 1013608.

The previous prime is 1031141. The next prime is 1031161. The reversal of 1031143 is 3411301.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3411301 = 1451 ⋅2351.

It is a cyclic number.

It is not a de Polignac number, because 1031143 - 2¹ = 1031141 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1031141) 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, 8680 + ... + 8797.

It is an arithmetic number, because the mean of its divisors is an integer number (262170).

2^1031143 is an apocalyptic number.

1031143 is a deficient number, since it is larger than the sum of its proper divisors (17537).

1031143 is an equidigital number, since it uses as much as digits as its factorization.

1031143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17536.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 1031143 is about 1015.4521160547. The cubic root of 1031143 is about 101.0275061508.

Adding to 1031143 its reverse (3411301), we get a palindrome (4442444).

The spelling of 1031143 in words is "one million, thirty-one thousand, one hundred forty-three".