1230436213 has 4 divisors (see below), whose sum is σ = 1234635948. Its totient is φ = 1226236480.

The previous prime is 1230436169. The next prime is 1230436223. The reversal of 1230436213 is 3126340321.

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 739459249 + 490976964 = 27193^2 + 22158^2 .

It is a cyclic number.

It is not a de Polignac number, because 1230436213 - 2¹³ = 1230428021 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 (1230436223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2099428 + ... + 2100013.

It is an arithmetic number, because the mean of its divisors is an integer number (308658987).

Almost surely, 2^1230436213 is an apocalyptic number.

It is an amenable number.

1230436213 is a deficient number, since it is larger than the sum of its proper divisors (4199735).

1230436213 is an equidigital number, since it uses as much as digits as its factorization.

1230436213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4199734.

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 1230436213 is about 35077.5742177249. The cubic root of 1230436213 is about 1071.5679150487.

Adding to 1230436213 its reverse (3126340321), we get a palindrome (4356776534).

The spelling of 1230436213 in words is "one billion, two hundred thirty million, four hundred thirty-six thousand, two hundred thirteen".