1131048 has 48 divisors (see below), whose sum is σ = 3201120. Its totient is φ = 360096.

The previous prime is 1131047. The next prime is 1131049. The reversal of 1131048 is 8401311.

It is an interprime number because it is at equal distance from previous prime (1131047) and next prime (1131049).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a self number, because there is not a number n which added to its sum of digits gives 1131048.

It is not an unprimeable number, because it can be changed into a prime (1131047) 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, 1315 + ... + 1997.

It is an arithmetic number, because the mean of its divisors is an integer number (66690).

2^1131048 is an apocalyptic number.

1131048 is a gapful number since it is divisible by the number (18) 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 1131048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1600560).

1131048 is an abundant number, since it is smaller than the sum of its proper divisors (2070072).

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

1131048 is a wasteful number, since it uses less digits than its factorization.

1131048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 718 (or 711 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 1131048 is about 1063.5074047697. The cubic root of 1131048 is about 104.1902336722.

Adding to 1131048 its reverse (8401311), we get a palindrome (9532359).

The spelling of 1131048 in words is "one million, one hundred thirty-one thousand, forty-eight".