1223504161 has 8 divisors (see below), whose sum is σ = 1413245664. Its totient is φ = 1046848320.

The previous prime is 1223504147. The next prime is 1223504173. The reversal of 1223504161 is 1614053221.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1223504161 - 2¹³ = 1223495969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1223504101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3271215 + ... + 3271588.

It is an arithmetic number, because the mean of its divisors is an integer number (176655708).

Almost surely, 2^1223504161 is an apocalyptic number.

1223504161 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1223504161 is a deficient number, since it is larger than the sum of its proper divisors (189741503).

1223504161 is a wasteful number, since it uses less digits than its factorization.

1223504161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6542831.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 1223504161 is about 34978.6243440190. The cubic root of 1223504161 is about 1069.5517850793.

Adding to 1223504161 its reverse (1614053221), we get a palindrome (2837557382).

The spelling of 1223504161 in words is "one billion, two hundred twenty-three million, five hundred four thousand, one hundred sixty-one".