1123011340 has 96 divisors (see below), whose sum is σ = 2826109440. Its totient is φ = 370022400.

The previous prime is 1123011319. The next prime is 1123011371. The reversal of 1123011340 is 431103211.

It is a super-2 number, since 2×1123011340² = 2522308939537191200, which contains 22 as substring.

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, 90300 + ... + 101980.

It is an arithmetic number, because the mean of its divisors is an integer number (29438640).

Almost surely, 2^1123011340 is an apocalyptic number.

1123011340 is a gapful number since it is divisible by the number (10) 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 1123011340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1413054720).

1123011340 is an abundant number, since it is smaller than the sum of its proper divisors (1703098100).

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

1123011340 is a wasteful number, since it uses less digits than its factorization.

1123011340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11743 (or 11741 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1123011340 is about 33511.3613570085. The cubic root of 1123011340 is about 1039.4287234816.

Adding to 1123011340 its reverse (431103211), we get a palindrome (1554114551).

The spelling of 1123011340 in words is "one billion, one hundred twenty-three million, eleven thousand, three hundred forty".