1230556273 has 4 divisors (see below), whose sum is σ = 1236999168. Its totient is φ = 1224113380.

The previous prime is 1230556267. The next prime is 1230556291. The reversal of 1230556273 is 3726550321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1230556273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1230556073) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3221161 + ... + 3221542.

It is an arithmetic number, because the mean of its divisors is an integer number (309249792).

Almost surely, 2^1230556273 is an apocalyptic number.

It is an amenable number.

1230556273 is a deficient number, since it is larger than the sum of its proper divisors (6442895).

1230556273 is an equidigital number, since it uses as much as digits as its factorization.

1230556273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6442894.

The product of its (nonzero) digits is 37800, while the sum is 34.

The square root of 1230556273 is about 35079.2855257914. The cubic root of 1230556273 is about 1071.6027667157.

The spelling of 1230556273 in words is "one billion, two hundred thirty million, five hundred fifty-six thousand, two hundred seventy-three".