1212323113 has 8 divisors (see below), whose sum is σ = 1237509576. Its totient is φ = 1187222400.

The previous prime is 1212323053. The next prime is 1212323129. The reversal of 1212323113 is 3113232121.

It can be written as a sum of positive squares in 4 ways, for example, as 587723049 + 624600064 = 24243^2 + 24992^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1212323113 - 2¹⁷ = 1212192041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1212323143) 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 7 ways as a sum of consecutive naturals, for example, 7533 + ... + 49813.

It is an arithmetic number, because the mean of its divisors is an integer number (154688697).

Almost surely, 2^1212323113 is an apocalyptic number.

It is an amenable number.

1212323113 is a deficient number, since it is larger than the sum of its proper divisors (25186463).

1212323113 is an equidigital number, since it uses as much as digits as its factorization.

1212323113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42875.

The product of its digits is 216, while the sum is 19.

The square root of 1212323113 is about 34818.4306510216. The cubic root of 1212323113 is about 1066.2837606858.

Adding to 1212323113 its reverse (3113232121), we get a palindrome (4325555234).

The spelling of 1212323113 in words is "one billion, two hundred twelve million, three hundred twenty-three thousand, one hundred thirteen".