1131332223 has 32 divisors (see below), whose sum is σ = 1760735232. Its totient is φ = 632736000.

The previous prime is 1131332221. The next prime is 1131332231. The reversal of 1131332223 is 3222331311.

It is not a de Polignac number, because 1131332223 - 2¹ = 1131332221 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 1131332223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131332221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 578898 + ... + 580848.

It is an arithmetic number, because the mean of its divisors is an integer number (55022976).

Almost surely, 2^1131332223 is an apocalyptic number.

1131332223 is a deficient number, since it is larger than the sum of its proper divisors (629403009).

1131332223 is a wasteful number, since it uses less digits than its factorization.

1131332223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2535.

The product of its digits is 648, while the sum is 21.

The square root of 1131332223 is about 33635.2824129663. The cubic root of 1131332223 is about 1041.9896032232.

Adding to 1131332223 its reverse (3222331311), we get a palindrome (4353663534).

The spelling of 1131332223 in words is "one billion, one hundred thirty-one million, three hundred thirty-two thousand, two hundred twenty-three".