1223631164 has 12 divisors (see below), whose sum is σ = 2447262384. Its totient is φ = 524413344.

The previous prime is 1223631139. The next prime is 1223631169. The reversal of 1223631164 is 4611363221.

1223631164 is an admirable number.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223631169) 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, 21850529 + ... + 21850584.

It is an arithmetic number, because the mean of its divisors is an integer number (203938532).

Almost surely, 2^1223631164 is an apocalyptic number.

1223631164 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1223631164 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1223631164 is a wasteful number, since it uses less digits than its factorization.

1223631164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43701124 (or 43701122 counting only the distinct ones).

The product of its digits is 5184, while the sum is 29.

The square root of 1223631164 is about 34980.4397342286. The cubic root of 1223631164 is about 1069.5887912429.

Adding to 1223631164 its reverse (4611363221), we get a palindrome (5834994385).

The spelling of 1223631164 in words is "one billion, two hundred twenty-three million, six hundred thirty-one thousand, one hundred sixty-four".