1123321530 has 32 divisors (see below), whose sum is σ = 2733948288. Its totient is φ = 295332800.

The previous prime is 1123321523. The next prime is 1123321571. The reversal of 1123321530 is 351233211.

It is a junction number, because it is equal to n+sod(n) for n = 1123321497 and 1123321506.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 261561 + ... + 265820.

It is an arithmetic number, because the mean of its divisors is an integer number (85435884).

Almost surely, 2^1123321530 is an apocalyptic number.

1123321530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1123321530 is an abundant number, since it is smaller than the sum of its proper divisors (1610626758).

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

1123321530 is a wasteful number, since it uses less digits than its factorization.

1123321530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 527462.

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 1123321530 is about 33515.9891693502. The cubic root of 1123321530 is about 1039.5244158114.

Adding to 1123321530 its reverse (351233211), we get a palindrome (1474554741).

The spelling of 1123321530 in words is "one billion, one hundred twenty-three million, three hundred twenty-one thousand, five hundred thirty".