1123524345 has 16 divisors (see below), whose sum is σ = 1799346240. Its totient is φ = 598643904.

The previous prime is 1123524329. The next prime is 1123524361. The reversal of 1123524345 is 5434253211.

It is an interprime number because it is at equal distance from previous prime (1123524329) and next prime (1123524361).

It is not a de Polignac number, because 1123524345 - 2⁴ = 1123524329 is a prime.

It is a Curzon number.

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, 18999 + ... + 51068.

It is an arithmetic number, because the mean of its divisors is an integer number (112459140).

Almost surely, 2^1123524345 is an apocalyptic number.

1123524345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1123524345 is a deficient number, since it is larger than the sum of its proper divisors (675821895).

1123524345 is a wasteful number, since it uses less digits than its factorization.

1123524345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71144.

The product of its digits is 14400, while the sum is 30.

The square root of 1123524345 is about 33519.0146782390. The cubic root of 1123524345 is about 1039.5869738745.

Adding to 1123524345 its reverse (5434253211), we get a palindrome (6557777556).

The spelling of 1123524345 in words is "one billion, one hundred twenty-three million, five hundred twenty-four thousand, three hundred forty-five".