1223631359 has 4 divisors (see below), whose sum is σ = 1231843800. Its totient is φ = 1215418920.

The previous prime is 1223631341. The next prime is 1223631361. The reversal of 1223631359 is 9531363221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9531363221 = 103 ⋅92537507.

It is a cyclic number.

It is not a de Polignac number, because 1223631359 - 2¹² = 1223627263 is a prime.

It is a super-3 number, since 3×1223631359³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223631319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4105997 + ... + 4106294.

It is an arithmetic number, because the mean of its divisors is an integer number (307960950).

Almost surely, 2^1223631359 is an apocalyptic number.

1223631359 is a deficient number, since it is larger than the sum of its proper divisors (8212441).

1223631359 is an equidigital number, since it uses as much as digits as its factorization.

1223631359 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8212440.

The product of its digits is 29160, while the sum is 35.

The square root of 1223631359 is about 34980.4425215005. The cubic root of 1223631359 is about 1069.5888480601.

The spelling of 1223631359 in words is "one billion, two hundred twenty-three million, six hundred thirty-one thousand, three hundred fifty-nine".