1213304630 has 16 divisors (see below), whose sum is σ = 2198414304. Its totient is φ = 482107200.

The previous prime is 1213304627. The next prime is 1213304647. The reversal of 1213304630 is 364033121.

It is a junction number, because it is equal to n+sod(n) for n = 1213304596 and 1213304605.

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, 400247 + ... + 403266.

It is an arithmetic number, because the mean of its divisors is an integer number (137400894).

Almost surely, 2^1213304630 is an apocalyptic number.

1213304630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1213304630 is a deficient number, since it is larger than the sum of its proper divisors (985109674).

1213304630 is a wasteful number, since it uses less digits than its factorization.

1213304630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 803671.

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 1213304630 is about 34832.5225902460. The cubic root of 1213304630 is about 1066.5714434309.

Adding to 1213304630 its reverse (364033121), we get a palindrome (1577337751).

The spelling of 1213304630 in words is "one billion, two hundred thirteen million, three hundred four thousand, six hundred thirty".