1223509583 has 4 divisors (see below), whose sum is σ = 1234944360. Its totient is φ = 1212074808.

The previous prime is 1223509561. The next prime is 1223509591. The reversal of 1223509583 is 3859053221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1223509583 - 2⁸ = 1223509327 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223509783) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5717228 + ... + 5717441.

It is an arithmetic number, because the mean of its divisors is an integer number (308736090).

Almost surely, 2^1223509583 is an apocalyptic number.

1223509583 is a deficient number, since it is larger than the sum of its proper divisors (11434777).

1223509583 is a wasteful number, since it uses less digits than its factorization.

1223509583 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11434776.

The product of its (nonzero) digits is 64800, while the sum is 38.

The square root of 1223509583 is about 34978.7018484106. The cubic root of 1223509583 is about 1069.5533649953.

The spelling of 1223509583 in words is "one billion, two hundred twenty-three million, five hundred nine thousand, five hundred eighty-three".