1230555433 has 4 divisors (see below), whose sum is σ = 1248922000. Its totient is φ = 1212188868.

The previous prime is 1230555419. The next prime is 1230555497. The reversal of 1230555433 is 3345550321.

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, and also an emirpimes, since its reverse is a distinct semiprime: 3345550321 = 12983 ⋅257687.

It is a cyclic number.

It is not a de Polignac number, because 1230555433 - 2⁹ = 1230554921 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1230555395 and 1230555404.

It is not an unprimeable number, because it can be changed into a prime (1230556433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9183183 + ... + 9183316.

It is an arithmetic number, because the mean of its divisors is an integer number (312230500).

Almost surely, 2^1230555433 is an apocalyptic number.

It is an amenable number.

1230555433 is a deficient number, since it is larger than the sum of its proper divisors (18366567).

1230555433 is an equidigital number, since it uses as much as digits as its factorization.

1230555433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18366566.

The product of its (nonzero) digits is 27000, while the sum is 31.

The square root of 1230555433 is about 35079.2735529116. The cubic root of 1230555433 is about 1071.6025228838.

The spelling of 1230555433 in words is "one billion, two hundred thirty million, five hundred fifty-five thousand, four hundred thirty-three".