1213425304 has 32 divisors (see below), whose sum is σ = 2800213920. Its totient is φ = 480036096.

The previous prime is 1213425251. The next prime is 1213425319. The reversal of 1213425304 is 4035243121.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 832669 + ... + 834124.

It is an arithmetic number, because the mean of its divisors is an integer number (87506685).

Almost surely, 2^1213425304 is an apocalyptic number.

1213425304 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1213425304 is an abundant number, since it is smaller than the sum of its proper divisors (1586788616).

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

1213425304 is a wasteful number, since it uses less digits than its factorization.

1213425304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1666819 (or 1666815 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 1213425304 is about 34834.2547501737. The cubic root of 1213425304 is about 1066.6068022827.

Adding to 1213425304 its reverse (4035243121), we get a palindrome (5248668425).

The spelling of 1213425304 in words is "one billion, two hundred thirteen million, four hundred twenty-five thousand, three hundred four".