1131233444 has 12 divisors (see below), whose sum is σ = 2159627568. Its totient is φ = 514197000.

The previous prime is 1131233443. The next prime is 1131233473. The reversal of 1131233444 is 4443321311.

It is a happy number.

It is a super-2 number, since 2×1131233444² = 2559378209648202272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1131233443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12854882 + ... + 12854969.

It is an arithmetic number, because the mean of its divisors is an integer number (179968964).

Almost surely, 2^1131233444 is an apocalyptic number.

It is an amenable number.

1131233444 is a deficient number, since it is larger than the sum of its proper divisors (1028394124).

1131233444 is a wasteful number, since it uses less digits than its factorization.

1131233444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25709866 (or 25709864 counting only the distinct ones).

The product of its digits is 3456, while the sum is 26.

The square root of 1131233444 is about 33633.8139972261. The cubic root of 1131233444 is about 1041.9592762380.

Adding to 1131233444 its reverse (4443321311), we get a palindrome (5574554755).

The spelling of 1131233444 in words is "one billion, one hundred thirty-one million, two hundred thirty-three thousand, four hundred forty-four".