1231153 has 16 divisors (see below), whose sum is σ = 1566720. Its totient is φ = 939600.

The previous prime is 1231141. The next prime is 1231171. The reversal of 1231153 is 3511321.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1231153 is a prime.

It is a Duffinian number.

1231153 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1231193) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4408 + ... + 4678.

It is an arithmetic number, because the mean of its divisors is an integer number (97920).

2^1231153 is an apocalyptic number.

It is an amenable number.

1231153 is a deficient number, since it is larger than the sum of its proper divisors (335567).

1231153 is a wasteful number, since it uses less digits than its factorization.

1231153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348.

The product of its digits is 90, while the sum is 16.

The square root of 1231153 is about 1109.5733414245. The cubic root of 1231153 is about 107.1775954236.

Adding to 1231153 its reverse (3511321), we get a palindrome (4742474).

The spelling of 1231153 in words is "one million, two hundred thirty-one thousand, one hundred fifty-three".