203120353 has 2 divisors, whose sum is σ = 203120354. Its totient is φ = 203120352.

The previous prime is 203120329. The next prime is 203120363. The reversal of 203120353 is 353021302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 125821089 + 77299264 = 11217^2 + 8792^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-203120353 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 203120353.

It is not a weakly prime, because it can be changed into another prime (203120363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101560176 + 101560177.

It is an arithmetic number, because the mean of its divisors is an integer number (101560177).

Almost surely, 2^203120353 is an apocalyptic number.

It is an amenable number.

203120353 is a deficient number, since it is larger than the sum of its proper divisors (1).

203120353 is an equidigital number, since it uses as much as digits as its factorization.

203120353 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 540, while the sum is 19.

The square root of 203120353 is about 14252.0297852622. The cubic root of 203120353 is about 587.8291891669.

Adding to 203120353 its reverse (353021302), we get a palindrome (556141655).

The spelling of 203120353 in words is "two hundred three million, one hundred twenty thousand, three hundred fifty-three".