1123012988 has 12 divisors (see below), whose sum is σ = 1965819240. Its totient is φ = 561350352.

The previous prime is 1123012981. The next prime is 1123012997. The reversal of 1123012988 is 8892103211.

It is a super-2 number, since 2×1123012988² = 2522316342433376288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123012981) 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, 22031 + ... + 52262.

It is an arithmetic number, because the mean of its divisors is an integer number (163818270).

Almost surely, 2^1123012988 is an apocalyptic number.

It is an amenable number.

1123012988 is a deficient number, since it is larger than the sum of its proper divisors (842806252).

1123012988 is a wasteful number, since it uses less digits than its factorization.

1123012988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78076 (or 78074 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 35.

The square root of 1123012988 is about 33511.3859456752. The cubic root of 1123012988 is about 1039.4292319293.

The spelling of 1123012988 in words is "one billion, one hundred twenty-three million, twelve thousand, nine hundred eighty-eight".