1131324442 has 4 divisors (see below), whose sum is σ = 1696986666. Its totient is φ = 565662220.

The previous prime is 1131324431. The next prime is 1131324487. The reversal of 1131324442 is 2444231311.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 879181801 + 252142641 = 29651^2 + 15879^2 .

It is a super-2 number, since 2×1131324442² = 2559789986133222728, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 282831109 + ... + 282831112.

Almost surely, 2^1131324442 is an apocalyptic number.

1131324442 is a deficient number, since it is larger than the sum of its proper divisors (565662224).

1131324442 is an equidigital number, since it uses as much as digits as its factorization.

1131324442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 565662223.

The product of its digits is 2304, while the sum is 25.

The square root of 1131324442 is about 33635.1667455358. The cubic root of 1131324442 is about 1041.9872143759.

Adding to 1131324442 its reverse (2444231311), we get a palindrome (3575555753).

The spelling of 1131324442 in words is "one billion, one hundred thirty-one million, three hundred twenty-four thousand, four hundred forty-two".