1123223136 has 48 divisors (see below), whose sum is σ = 3369671424. Its totient is φ = 320920704.

The previous prime is 1123223113. The next prime is 1123223141. The reversal of 1123223136 is 6313223211.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 835060 + ... + 836403.

It is an arithmetic number, because the mean of its divisors is an integer number (70201488).

Almost surely, 2^1123223136 is an apocalyptic number.

1123223136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1123223136 is an abundant number, since it is smaller than the sum of its proper divisors (2246448288).

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

1123223136 is a wasteful number, since it uses less digits than its factorization.

1123223136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1671483 (or 1671475 counting only the distinct ones).

The product of its digits is 1296, while the sum is 24.

The square root of 1123223136 is about 33514.5212706373. The cubic root of 1123223136 is about 1039.4940635780.

Adding to 1123223136 its reverse (6313223211), we get a palindrome (7436446347).

The spelling of 1123223136 in words is "one billion, one hundred twenty-three million, two hundred twenty-three thousand, one hundred thirty-six".