1123011543 has 8 divisors (see below), whose sum is σ = 1497571056. Its totient is φ = 748563200.

The previous prime is 1123011529. The next prime is 1123011553. The reversal of 1123011543 is 3451103211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1123011543 - 2⁶ = 1123011479 is a prime.

It is a super-2 number, since 2×1123011543² = 2522309851422481698, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123011553) 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, 348 + ... + 47393.

It is an arithmetic number, because the mean of its divisors is an integer number (187196382).

Almost surely, 2^1123011543 is an apocalyptic number.

1123011543 is a deficient number, since it is larger than the sum of its proper divisors (374559513).

1123011543 is an equidigital number, since it uses as much as digits as its factorization.

1123011543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55585.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 1123011543 is about 33511.3643858319. The cubic root of 1123011543 is about 1039.4287861120.

Adding to 1123011543 its reverse (3451103211), we get a palindrome (4574114754).

The spelling of 1123011543 in words is "one billion, one hundred twenty-three million, eleven thousand, five hundred forty-three".