1203133123 has 2 divisors, whose sum is σ = 1203133124. Its totient is φ = 1203133122.

The previous prime is 1203133117. The next prime is 1203133147. The reversal of 1203133123 is 3213313021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1203133123 - 2⁵ = 1203133091 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1203133123.

It is not a weakly prime, because it can be changed into another prime (1203133153) 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 as a sum of consecutive naturals, namely, 601566561 + 601566562.

It is an arithmetic number, because the mean of its divisors is an integer number (601566562).

Almost surely, 2^1203133123 is an apocalyptic number.

1203133123 is a deficient number, since it is larger than the sum of its proper divisors (1).

1203133123 is an equidigital number, since it uses as much as digits as its factorization.

1203133123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 1203133123 is about 34686.2094066215. The cubic root of 1203133123 is about 1063.5826098906.

Adding to 1203133123 its reverse (3213313021), we get a palindrome (4416446144).

It can be divided in two parts, 12031 and 33123, that added together give a palindrome (45154).

The spelling of 1203133123 in words is "one billion, two hundred three million, one hundred thirty-three thousand, one hundred twenty-three".