1223828423187 has 16 divisors (see below), whose sum is σ = 1754199759360. Its totient is φ = 756498642912.

The previous prime is 1223828423033. The next prime is 1223828423231. The reversal of 1223828423187 is 7813248283221.

It is a happy number.

It is not a de Polignac number, because 1223828423187 - 2²⁸ = 1223559987731 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1223828423287) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 228408748 + ... + 228414105.

It is an arithmetic number, because the mean of its divisors is an integer number (109637484960).

Almost surely, 2^{1223828423187} is an apocalyptic number.

1223828423187 is a deficient number, since it is larger than the sum of its proper divisors (530371336173).

1223828423187 is a wasteful number, since it uses less digits than its factorization.

1223828423187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 456822922.

The product of its digits is 2064384, while the sum is 51.

The spelling of 1223828423187 in words is "one trillion, two hundred twenty-three billion, eight hundred twenty-eight million, four hundred twenty-three thousand, one hundred eighty-seven".