1230105213 has 12 divisors (see below), whose sum is σ = 1777504768. Its totient is φ = 819753480.

The previous prime is 1230105187. The next prime is 1230105259. The reversal of 1230105213 is 3125010321.

It is not a de Polignac number, because 1230105213 - 2⁵ = 1230105181 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 (1230105013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 445 + ... + 49602.

Almost surely, 2^1230105213 is an apocalyptic number.

It is an amenable number.

1230105213 is a deficient number, since it is larger than the sum of its proper divisors (547399555).

1230105213 is a wasteful number, since it uses less digits than its factorization.

1230105213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52784 (or 52781 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 1230105213 is about 35072.8557862059. The cubic root of 1230105213 is about 1071.4718188334.

Adding to 1230105213 its reverse (3125010321), we get a palindrome (4355115534).

The spelling of 1230105213 in words is "one billion, two hundred thirty million, one hundred five thousand, two hundred thirteen".