1211130304 has 14 divisors (see below), whose sum is σ = 2403336824. Its totient is φ = 605565120.

The previous prime is 1211130253. The next prime is 1211130313. The reversal of 1211130304 is 4030311121.

It is a super-2 number, since 2×1211130304² = 2933673226534264832, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9461892 + ... + 9462019.

It is an arithmetic number, because the mean of its divisors is an integer number (171666916).

Almost surely, 2^1211130304 is an apocalyptic number.

It is an amenable number.

1211130304 is a deficient number, since it is larger than the sum of its proper divisors (1192206520).

1211130304 is an equidigital number, since it uses as much as digits as its factorization.

1211130304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18923923 (or 18923913 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1211130304 is about 34801.2974470780. The cubic root of 1211130304 is about 1065.9339391423.

Adding to 1211130304 its reverse (4030311121), we get a palindrome (5241441425).

The spelling of 1211130304 in words is "one billion, two hundred eleven million, one hundred thirty thousand, three hundred four".