1213030105 has 32 divisors (see below), whose sum is σ = 1686666240. Its totient is φ = 820316160.

The previous prime is 1213030103. The next prime is 1213030111. The reversal of 1213030105 is 5010303121.

It is not a de Polignac number, because 1213030105 - 2¹ = 1213030103 is a prime.

It is a super-2 number, since 2×1213030105² = 2942884071272622050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1213030103) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1462831 + ... + 1463659.

It is an arithmetic number, because the mean of its divisors is an integer number (52708320).

Almost surely, 2^1213030105 is an apocalyptic number.

It is an amenable number.

1213030105 is a deficient number, since it is larger than the sum of its proper divisors (473636135).

1213030105 is an equidigital number, since it uses as much as digits as its factorization.

1213030105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1369.

The product of its (nonzero) digits is 90, while the sum is 16.

The square root of 1213030105 is about 34828.5817253588. The cubic root of 1213030105 is about 1066.4909957554.

Adding to 1213030105 its reverse (5010303121), we get a palindrome (6223333226).

The spelling of 1213030105 in words is "one billion, two hundred thirteen million, thirty thousand, one hundred five".