1213432224 has 24 divisors (see below), whose sum is σ = 3185259840. Its totient is φ = 404477376.

The previous prime is 1213432223. The next prime is 1213432237. The reversal of 1213432224 is 4222343121.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 1213432194 and 1213432203.

It is not an unprimeable number, because it can be changed into a prime (1213432223) 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, 6319864 + ... + 6320055.

It is an arithmetic number, because the mean of its divisors is an integer number (132719160).

Almost surely, 2^1213432224 is an apocalyptic number.

It is an amenable number.

1213432224 is an abundant number, since it is smaller than the sum of its proper divisors (1971827616).

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

1213432224 is a wasteful number, since it uses less digits than its factorization.

1213432224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12639932 (or 12639924 counting only the distinct ones).

The product of its digits is 2304, while the sum is 24.

The square root of 1213432224 is about 34834.3540775482. The cubic root of 1213432224 is about 1066.6088298501.

Adding to 1213432224 its reverse (4222343121), we get a palindrome (5435775345).

The spelling of 1213432224 in words is "one billion, two hundred thirteen million, four hundred thirty-two thousand, two hundred twenty-four".