1071231 has 16 divisors (see below), whose sum is σ = 1689600. Its totient is φ = 590688.

The previous prime is 1071229. The next prime is 1071233. The reversal of 1071231 is 1321701.

It is an interprime number because it is at equal distance from previous prime (1071229) and next prime (1071233).

It is not a de Polignac number, because 1071231 - 2¹ = 1071229 is a prime.

It is a super-2 number, since 2×1071231² = 2295071710722, which contains 22 as substring.

1071231 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1071231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1071233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 271 + ... + 1488.

It is an arithmetic number, because the mean of its divisors is an integer number (105600).

2^1071231 is an apocalyptic number.

1071231 is a deficient number, since it is larger than the sum of its proper divisors (618369).

1071231 is a wasteful number, since it uses less digits than its factorization.

1071231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1798.

The product of its (nonzero) digits is 42, while the sum is 15.

The square root of 1071231 is about 1035.0028985467. The cubic root of 1071231 is about 102.3201207594.

Adding to 1071231 its reverse (1321701), we get a palindrome (2392932).

The spelling of 1071231 in words is "one million, seventy-one thousand, two hundred thirty-one".