203120413 has 2 divisors, whose sum is σ = 203120414. Its totient is φ = 203120412.

The previous prime is 203120381. The next prime is 203120441. The reversal of 203120413 is 314021302.

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., 143568324 + 59552089 = 11982^2 + 7717^2 .

It is a cyclic number.

It is not a de Polignac number, because 203120413 - 2⁵ = 203120381 is a prime.

It is equal to p_11242123 and since 203120413 and 11242123 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (203120473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101560206 + 101560207.

It is an arithmetic number, because the mean of its divisors is an integer number (101560207).

Almost surely, 2^203120413 is an apocalyptic number.

It is an amenable number.

203120413 is a deficient number, since it is larger than the sum of its proper divisors (1).

203120413 is an equidigital number, since it uses as much as digits as its factorization.

203120413 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 203120413 is about 14252.0318902253. The cubic root of 203120413 is about 587.8292470467.

Adding to 203120413 its reverse (314021302), we get a palindrome (517141715).

The spelling of 203120413 in words is "two hundred three million, one hundred twenty thousand, four hundred thirteen".