1228523 has 4 divisors (see below), whose sum is σ = 1233360. Its totient is φ = 1223688.

The previous prime is 1228519. The next prime is 1228537. The reversal of 1228523 is 3258221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3258221 = 157 ⋅20753.

It is a cyclic number.

It is not a de Polignac number, because 1228523 - 2² = 1228519 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1228543) 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, 2015 + ... + 2552.

It is an arithmetic number, because the mean of its divisors is an integer number (308340).

2^1228523 is an apocalyptic number.

1228523 is a deficient number, since it is larger than the sum of its proper divisors (4837).

1228523 is an equidigital number, since it uses as much as digits as its factorization.

1228523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4836.

The product of its digits is 960, while the sum is 23.

The square root of 1228523 is about 1108.3875675954. The cubic root of 1228523 is about 107.1012231042.

The spelling of 1228523 in words is "one million, two hundred twenty-eight thousand, five hundred twenty-three".