11203123313 has 12 divisors (see below), whose sum is σ = 11717726748. Its totient is φ = 10709630400.

The previous prime is 11203123307. The next prime is 11203123319. The reversal of 11203123313 is 31332130211.

It is an interprime number because it is at equal distance from previous prime (11203123307) and next prime (11203123319).

It can be written as a sum of positive squares in 6 ways, for example, as 740492944 + 10462630369 = 27212^2 + 102287^2 .

It is not a de Polignac number, because 11203123313 - 2⁴ = 11203123297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11203123319) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18995 + ... + 150887.

It is an arithmetic number, because the mean of its divisors is an integer number (976477229).

Almost surely, 2^11203123313 is an apocalyptic number.

It is an amenable number.

11203123313 is a deficient number, since it is larger than the sum of its proper divisors (514603435).

11203123313 is a wasteful number, since it uses less digits than its factorization.

11203123313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132052 (or 132023 counting only the distinct ones).

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

Adding to 11203123313 its reverse (31332130211), we get a palindrome (42535253524).

The spelling of 11203123313 in words is "eleven billion, two hundred three million, one hundred twenty-three thousand, three hundred thirteen".