1212244313 has 12 divisors (see below), whose sum is σ = 1471713792. Its totient is φ = 977943360.

The previous prime is 1212244309. The next prime is 1212244321. The reversal of 1212244313 is 3134422121.

It is not a de Polignac number, because 1212244313 - 2² = 1212244309 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1212244303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 297593 + ... + 301638.

It is an arithmetic number, because the mean of its divisors is an integer number (122642816).

Almost surely, 2^1212244313 is an apocalyptic number.

It is an amenable number.

1212244313 is a deficient number, since it is larger than the sum of its proper divisors (259469479).

1212244313 is an equidigital number, since it uses as much as digits as its factorization.

1212244313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 599272 (or 599255 counting only the distinct ones).

The product of its digits is 1152, while the sum is 23.

The square root of 1212244313 is about 34817.2990480307. The cubic root of 1212244313 is about 1066.2606576643.

Adding to 1212244313 its reverse (3134422121), we get a palindrome (4346666434).

The spelling of 1212244313 in words is "one billion, two hundred twelve million, two hundred forty-four thousand, three hundred thirteen".