1223780233 has 8 divisors (see below), whose sum is σ = 1322132168. Its totient is φ = 1126030464.

The previous prime is 1223780213. The next prime is 1223780237. The reversal of 1223780233 is 3320873221.

It can be written as a sum of positive squares in 4 ways, for example, as 184878409 + 1038901824 = 13597^2 + 32232^2 .

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

It is not a de Polignac number, because 1223780233 - 2²¹ = 1221683081 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1223780195 and 1223780204.

It is not an unprimeable number, because it can be changed into a prime (1223780237) 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, 146310 + ... + 154447.

It is an arithmetic number, because the mean of its divisors is an integer number (165266521).

Almost surely, 2^1223780233 is an apocalyptic number.

1223780233 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1223780233 is a deficient number, since it is larger than the sum of its proper divisors (98351935).

1223780233 is a wasteful number, since it uses less digits than its factorization.

1223780233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301083.

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 1223780233 is about 34982.5704172807. The cubic root of 1223780233 is about 1069.6322237363.

It can be divided in two parts, 1223 and 780233, that added together give a square (781456 = 884²).

The spelling of 1223780233 in words is "one billion, two hundred twenty-three million, seven hundred eighty thousand, two hundred thirty-three".