1223631360 has 480 divisors, whose sum is σ = 5040427392. Its totient is φ = 278691840.

The previous prime is 1223631341. The next prime is 1223631361. The reversal of 1223631360 is 631363221.

It is a happy number.

1223631360 is a `hidden beast` number, since 1 + 2 + 23 + 631 + 3 + 6 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (480).

It is a super-3 number, since 3×1223631360³ (a number of 28 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223631361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4354420 + ... + 4354700.

Almost surely, 2^1223631360 is an apocalyptic number.

1223631360 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1223631360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2520213696).

1223631360 is an abundant number, since it is smaller than the sum of its proper divisors (3816796032).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1223631360 is an frugal number, since it uses more digits than its factorization.

1223631360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326 (or 298 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

The square root of 1223631360 is about 34980.4425357942. The cubic root of 1223631360 is about 1069.5888483515.

Adding to 1223631360 its reverse (631363221), we get a palindrome (1854994581).

The spelling of 1223631360 in words is "one billion, two hundred twenty-three million, six hundred thirty-one thousand, three hundred sixty".