1212230413 has 4 divisors (see below), whose sum is σ = 1212713788. Its totient is φ = 1211747040.

The previous prime is 1212230401. The next prime is 1212230447. The reversal of 1212230413 is 3140322121.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 60171049 + 1152059364 = 7757^2 + 33942^2 .

It is a cyclic number.

It is not a de Polignac number, because 1212230413 - 2⁹ = 1212229901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212230473) 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 3 ways as a sum of consecutive naturals, for example, 237906 + ... + 242947.

It is an arithmetic number, because the mean of its divisors is an integer number (303178447).

Almost surely, 2^1212230413 is an apocalyptic number.

It is an amenable number.

1212230413 is a deficient number, since it is larger than the sum of its proper divisors (483375).

1212230413 is an equidigital number, since it uses as much as digits as its factorization.

1212230413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 483374.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1212230413 is about 34817.0994340425. The cubic root of 1212230413 is about 1066.2565822813.

Adding to 1212230413 its reverse (3140322121), we get a palindrome (4352552534).

The spelling of 1212230413 in words is "one billion, two hundred twelve million, two hundred thirty thousand, four hundred thirteen".