1213403424 has 48 divisors (see below), whose sum is σ = 3372552288. Its totient is φ = 380675072.

The previous prime is 1213403417. The next prime is 1213403437. The reversal of 1213403424 is 4243043121.

It is a tau number, because it is divible by the number of its divisors (48).

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 = 1213403394 and 1213403403.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 370122 + ... + 373385.

It is an arithmetic number, because the mean of its divisors is an integer number (70261506).

Almost surely, 2^1213403424 is an apocalyptic number.

It is an amenable number.

1213403424 is an abundant number, since it is smaller than the sum of its proper divisors (2159148864).

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

1213403424 is a wasteful number, since it uses less digits than its factorization.

1213403424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 743537 (or 743529 counting only the distinct ones).

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

The square root of 1213403424 is about 34833.9406900798. The cubic root of 1213403424 is about 1066.6003913683.

Adding to 1213403424 its reverse (4243043121), we get a palindrome (5456446545).

The spelling of 1213403424 in words is "one billion, two hundred thirteen million, four hundred three thousand, four hundred twenty-four".