1131004 has 24 divisors (see below), whose sum is σ = 2336768. Its totient is φ = 468720.

The previous prime is 1130981. The next prime is 1131023. The reversal of 1131004 is 4001311.

It is a happy number.

It is a congruent number.

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, 217 + ... + 1519.

2^1131004 is an apocalyptic number.

1131004 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 1131004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1168384).

1131004 is an abundant number, since it is smaller than the sum of its proper divisors (1205764).

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

1131004 is a wasteful number, since it uses less digits than its factorization.

1131004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1345 (or 1343 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 1131004 is about 1063.4867182998. The cubic root of 1131004 is about 104.1888825861.

Adding to 1131004 its reverse (4001311), we get a palindrome (5132315).

The spelling of 1131004 in words is "one million, one hundred thirty-one thousand, four".