2203913 has 4 divisors (see below), whose sum is σ = 2279940. Its totient is φ = 2127888.

The previous prime is 2203889. The next prime is 2203933. The reversal of 2203913 is 3193022.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1054729 + 1149184 = 1027^2 + 1072^2 .

It is a cyclic number.

It is not a de Polignac number, because 2203913 - 2⁶ = 2203849 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2203933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37970 + ... + 38027.

It is an arithmetic number, because the mean of its divisors is an integer number (569985).

2^2203913 is an apocalyptic number.

It is an amenable number.

2203913 is a deficient number, since it is larger than the sum of its proper divisors (76027).

2203913 is an equidigital number, since it uses as much as digits as its factorization.

2203913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76026.

The product of its (nonzero) digits is 324, while the sum is 20.

The square root of 2203913 is about 1484.5581834337. The cubic root of 2203913 is about 130.1362083218.

Adding to 2203913 its reverse (3193022), we get a palindrome (5396935).

The spelling of 2203913 in words is "two million, two hundred three thousand, nine hundred thirteen".