1131822 has 24 divisors (see below), whose sum is σ = 2471976. Its totient is φ = 374256.

The previous prime is 1131821. The next prime is 1131827. The reversal of 1131822 is 2281311.

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

It is a junction number, because it is equal to n+sod(n) for n = 1131795 and 1131804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131821) 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, 3948 + ... + 4224.

It is an arithmetic number, because the mean of its divisors is an integer number (102999).

2^1131822 is an apocalyptic number.

1131822 is an abundant number, since it is smaller than the sum of its proper divisors (1340154).

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

1131822 is a wasteful number, since it uses less digits than its factorization.

1131822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 512 (or 509 counting only the distinct ones).

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

The square root of 1131822 is about 1063.8712328097. The cubic root of 1131822 is about 104.2139947777.

It can be divided in two parts, 1131 and 822, that added together give a triangular number (1953 = T₆₂).

The spelling of 1131822 in words is "one million, one hundred thirty-one thousand, eight hundred twenty-two".