1213534304 has 48 divisors (see below), whose sum is σ = 2452898448. Its totient is φ = 590671872.

The previous prime is 1213534271. The next prime is 1213534321. The reversal of 1213534304 is 4034353121.

It is a super-3 number, since 3×1213534304³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

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, 462404 + ... + 465020.

It is an arithmetic number, because the mean of its divisors is an integer number (51102051).

Almost surely, 2^1213534304 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1213534304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1226449224).

1213534304 is an abundant number, since it is smaller than the sum of its proper divisors (1239364144).

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

1213534304 is a wasteful number, since it uses less digits than its factorization.

1213534304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3007 (or 2999 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 1213534304 is about 34835.8192669557. The cubic root of 1213534304 is about 1066.6387385049.

Adding to 1213534304 its reverse (4034353121), we get a palindrome (5247887425).

The spelling of 1213534304 in words is "one billion, two hundred thirteen million, five hundred thirty-four thousand, three hundred four".