1212313441 has 4 divisors (see below), whose sum is σ = 1238107392. Its totient is φ = 1186519492.

The previous prime is 1212313439. The next prime is 1212313447. The reversal of 1212313441 is 1443132121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1212313441 - 2¹ = 1212313439 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1212313447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12896905 + ... + 12896998.

It is an arithmetic number, because the mean of its divisors is an integer number (309526848).

Almost surely, 2^1212313441 is an apocalyptic number.

It is an amenable number.

1212313441 is a deficient number, since it is larger than the sum of its proper divisors (25793951).

1212313441 is an equidigital number, since it uses as much as digits as its factorization.

1212313441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25793950.

The product of its digits is 576, while the sum is 22.

The square root of 1212313441 is about 34818.2917587868. The cubic root of 1212313441 is about 1066.2809250491.

Adding to 1212313441 its reverse (1443132121), we get a palindrome (2655445562).

It can be divided in two parts, 121 and 2313441, that multiplied together give a square (279926361 = 16731²).

The spelling of 1212313441 in words is "one billion, two hundred twelve million, three hundred thirteen thousand, four hundred forty-one".