1123431166 has 32 divisors (see below), whose sum is σ = 1984445568. Its totient is φ = 470252640.

The previous prime is 1123431151. The next prime is 1123431167. The reversal of 1123431166 is 6611343211.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123431167) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 122265 + ... + 131131.

It is an arithmetic number, because the mean of its divisors is an integer number (62013924).

Almost surely, 2^1123431166 is an apocalyptic number.

1123431166 is a deficient number, since it is larger than the sum of its proper divisors (861014402).

1123431166 is a wasteful number, since it uses less digits than its factorization.

1123431166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9336.

The product of its digits is 2592, while the sum is 28.

The square root of 1123431166 is about 33517.6247070105. The cubic root of 1123431166 is about 1039.5582338496.

Adding to 1123431166 its reverse (6611343211), we get a palindrome (7734774377).

The spelling of 1123431166 in words is "one billion, one hundred twenty-three million, four hundred thirty-one thousand, one hundred sixty-six".