1101231 has 12 divisors (see below), whose sum is σ = 1634152. Its totient is φ = 714096.

The previous prime is 1101229. The next prime is 1101253. The reversal of 1101231 is 1321011.

It is not a de Polignac number, because 1101231 - 2¹ = 1101229 is a prime.

It is a super-2 number, since 2×1101231² = 2425419430722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101211) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1321 + ... + 1986.

2^1101231 is an apocalyptic number.

1101231 is a deficient number, since it is larger than the sum of its proper divisors (532921).

1101231 is a wasteful number, since it uses less digits than its factorization.

1101231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3350 (or 3347 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

The square root of 1101231 is about 1049.3955402993. The cubic root of 1101231 is about 103.2665043666.

Adding to 1101231 its reverse (1321011), we get a palindrome (2422242).

The spelling of 1101231 in words is "one million, one hundred one thousand, two hundred thirty-one".