1213043424 has 24 divisors (see below), whose sum is σ = 3184239240. Its totient is φ = 404347776.

The previous prime is 1213043417. The next prime is 1213043443. The reversal of 1213043424 is 4243403121.

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 junction number, because it is equal to n+sod(n) for n = 1213043394 and 1213043403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6317839 + ... + 6318030.

It is an arithmetic number, because the mean of its divisors is an integer number (132676635).

Almost surely, 2^1213043424 is an apocalyptic number.

It is an amenable number.

1213043424 is an abundant number, since it is smaller than the sum of its proper divisors (1971195816).

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

1213043424 is a wasteful number, since it uses less digits than its factorization.

1213043424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12635882 (or 12635874 counting only the distinct ones).

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

The square root of 1213043424 is about 34828.7729327348. The cubic root of 1213043424 is about 1066.4948990775.

Adding to 1213043424 its reverse (4243403121), we get a palindrome (5456446545).

The spelling of 1213043424 in words is "one billion, two hundred thirteen million, forty-three thousand, four hundred twenty-four".