203022013 has 2 divisors, whose sum is σ = 203022014. Its totient is φ = 203022012.

The previous prime is 203021971. The next prime is 203022023. The reversal of 203022013 is 310220302.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 202151524 + 870489 = 14218^2 + 933^2 .

It is a cyclic number.

It is not a de Polignac number, because 203022013 - 2⁹ = 203021501 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 203021984 and 203022002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (203022023) 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, 101511006 + 101511007.

It is an arithmetic number, because the mean of its divisors is an integer number (101511007).

Almost surely, 2^203022013 is an apocalyptic number.

It is an amenable number.

203022013 is a deficient number, since it is larger than the sum of its proper divisors (1).

203022013 is an equidigital number, since it uses as much as digits as its factorization.

203022013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 203022013 is about 14248.5793326914. The cubic root of 203022013 is about 587.7343087127.

Adding to 203022013 its reverse (310220302), we get a palindrome (513242315).

The spelling of 203022013 in words is "two hundred three million, twenty-two thousand, thirteen".