1123307136 has 256 divisors, whose sum is σ = 3858048000. Its totient is φ = 315104256.

The previous prime is 1123307093. The next prime is 1123307149. The reversal of 1123307136 is 6317033211.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1426935 + ... + 1427721.

It is an arithmetic number, because the mean of its divisors is an integer number (15070500).

Almost surely, 2^1123307136 is an apocalyptic number.

1123307136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1123307136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1929024000).

1123307136 is an abundant number, since it is smaller than the sum of its proper divisors (2734740864).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1123307136 is an equidigital number, since it uses as much as digits as its factorization.

1123307136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 876 (or 858 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 27.

The square root of 1123307136 is about 33515.7744353312. The cubic root of 1123307136 is about 1039.5199757119.

The spelling of 1123307136 in words is "one billion, one hundred twenty-three million, three hundred seven thousand, one hundred thirty-six".