1311210304 has 28 divisors (see below), whose sum is σ = 2628769444. Its totient is φ = 648843264.

The previous prime is 1311210293. The next prime is 1311210343. The reversal of 1311210304 is 4030121131.

It can be written as a sum of positive squares in 2 ways, for example, as 219040000 + 1092170304 = 14800^2 + 33048^2 .

It is a super-2 number, since 2×1311210304² = 3438544922631544832, 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 in 3 ways as a sum of consecutive naturals, for example, 99399 + ... + 111814.

It is an arithmetic number, because the mean of its divisors is an integer number (93884623).

Almost surely, 2^1311210304 is an apocalyptic number.

It is an amenable number.

1311210304 is an abundant number, since it is smaller than the sum of its proper divisors (1317559140).

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

1311210304 is an equidigital number, since it uses as much as digits as its factorization.

1311210304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211322 (or 211312 counting only the distinct ones).

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

The square root of 1311210304 is about 36210.6379949318. The cubic root of 1311210304 is about 1094.5210485044.

Adding to 1311210304 its reverse (4030121131), we get a palindrome (5341331435).

The spelling of 1311210304 in words is "one billion, three hundred eleven million, two hundred ten thousand, three hundred four".