1223034985 has 4 divisors (see below), whose sum is σ = 1467641988. Its totient is φ = 978427984.

The previous prime is 1223034983. The next prime is 1223034991. The reversal of 1223034985 is 5894303221.

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

It can be written as a sum of positive squares in 2 ways, for example, as 716739984 + 506295001 = 26772^2 + 22501^2 .

It is a cyclic number.

It is not a de Polignac number, because 1223034985 - 2¹ = 1223034983 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1223034983) 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, 122303494 + ... + 122303503.

It is an arithmetic number, because the mean of its divisors is an integer number (366910497).

Almost surely, 2^1223034985 is an apocalyptic number.

It is an amenable number.

1223034985 is a deficient number, since it is larger than the sum of its proper divisors (244607003).

1223034985 is an equidigital number, since it uses as much as digits as its factorization.

1223034985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244607002.

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 1223034985 is about 34971.9170907172. The cubic root of 1223034985 is about 1069.4150542585.

The spelling of 1223034985 in words is "one billion, two hundred twenty-three million, thirty-four thousand, nine hundred eighty-five".