1123355320 has 32 divisors (see below), whose sum is σ = 2528935920. Its totient is φ = 449095680.

The previous prime is 1123355309. The next prime is 1123355329. The reversal of 1123355320 is 235533211.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123355329) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77875 + ... + 91165.

Almost surely, 2^1123355320 is an apocalyptic number.

1123355320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1123355320 is an abundant number, since it is smaller than the sum of its proper divisors (1405580600).

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

1123355320 is a wasteful number, since it uses less digits than its factorization.

1123355320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15415 (or 15411 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 25.

The square root of 1123355320 is about 33516.4932533223. The cubic root of 1123355320 is about 1039.5348388224.

Adding to 1123355320 its reverse (235533211), we get a palindrome (1358888531).

The spelling of 1123355320 in words is "one billion, one hundred twenty-three million, three hundred fifty-five thousand, three hundred twenty".