1231104 has 72 divisors (see below), whose sum is σ = 3760960. Its totient is φ = 350208.

The previous prime is 1231099. The next prime is 1231127. The reversal of 1231104 is 4011321.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a self number, because there is not a number n which added to its sum of digits gives 1231104.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5262 + ... + 5490.

2^1231104 is an apocalyptic number.

1231104 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1231104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1880480).

1231104 is an abundant number, since it is smaller than the sum of its proper divisors (2529856).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1231104 is an equidigital number, since it uses as much as digits as its factorization.

1231104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255 (or 241 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 1231104 is about 1109.5512606455. The cubic root of 1231104 is about 107.1761735121.

Adding to 1231104 its reverse (4011321), we get a palindrome (5242425).

It can be divided in two parts, 12 and 31104, that multiplied together give a cube (373248 = 72³).

The spelling of 1231104 in words is "one million, two hundred thirty-one thousand, one hundred four".