1213447083 has 4 divisors (see below), whose sum is σ = 1617929448. Its totient is φ = 808964720.

The previous prime is 1213447073. The next prime is 1213447091. The reversal of 1213447083 is 3807443121.

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

It is a cyclic number.

It is not a de Polignac number, because 1213447083 - 2⁵ = 1213447051 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1213447003) 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 3 ways as a sum of consecutive naturals, for example, 202241178 + ... + 202241183.

It is an arithmetic number, because the mean of its divisors is an integer number (404482362).

Almost surely, 2^1213447083 is an apocalyptic number.

1213447083 is a deficient number, since it is larger than the sum of its proper divisors (404482365).

1213447083 is an equidigital number, since it uses as much as digits as its factorization.

1213447083 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404482364.

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 1213447083 is about 34834.5673577267. The cubic root of 1213447083 is about 1066.6131835271.

The spelling of 1213447083 in words is "one billion, two hundred thirteen million, four hundred forty-seven thousand, eighty-three".