1131622443 has 24 divisors (see below), whose sum is σ = 1911523328. Its totient is φ = 631601712.

The previous prime is 1131622441. The next prime is 1131622487. The reversal of 1131622443 is 3442261311.

It is a happy number.

1131622443 is a `hidden beast` number, since 1 + 1 + 31 + 622 + 4 + 4 + 3 = 666.

It is not a de Polignac number, because 1131622443 - 2¹ = 1131622441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1131622441) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 206155 + ... + 211572.

Almost surely, 2^1131622443 is an apocalyptic number.

1131622443 is a deficient number, since it is larger than the sum of its proper divisors (779900885).

1131622443 is a wasteful number, since it uses less digits than its factorization.

1131622443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417783 (or 417780 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 1131622443 is about 33639.5963560801. The cubic root of 1131622443 is about 1042.0786959352.

Adding to 1131622443 its reverse (3442261311), we get a palindrome (4573883754).

The spelling of 1131622443 in words is "one billion, one hundred thirty-one million, six hundred twenty-two thousand, four hundred forty-three".