1213060405 has 16 divisors (see below), whose sum is σ = 1484064000. Its totient is φ = 951687360.

The previous prime is 1213060363. The next prime is 1213060423. The reversal of 1213060405 is 5040603121.

It is not a de Polignac number, because 1213060405 - 2⁹ = 1213059893 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48550 + ... + 69160.

It is an arithmetic number, because the mean of its divisors is an integer number (92754000).

Almost surely, 2^1213060405 is an apocalyptic number.

It is an amenable number.

1213060405 is a deficient number, since it is larger than the sum of its proper divisors (271003595).

1213060405 is a wasteful number, since it uses less digits than its factorization.

1213060405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20844.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 1213060405 is about 34829.0167102087. The cubic root of 1213060405 is about 1066.4998755592.

Adding to 1213060405 its reverse (5040603121), we get a palindrome (6253663526).

The spelling of 1213060405 in words is "one billion, two hundred thirteen million, sixty thousand, four hundred five".