1113203101 has 4 divisors (see below), whose sum is σ = 1115639452. Its totient is φ = 1110766752.

The previous prime is 1113203093. The next prime is 1113203111. The reversal of 1113203101 is 1013023111.

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 640140601 + 473062500 = 25301^2 + 21750^2 .

It is a cyclic number.

It is not a de Polignac number, because 1113203101 - 2³ = 1113203093 is a prime.

It is a super-2 number, since 2×1113203101² = 2478442288152032402, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1113203111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1217490 + ... + 1218403.

It is an arithmetic number, because the mean of its divisors is an integer number (278909863).

Almost surely, 2^1113203101 is an apocalyptic number.

It is an amenable number.

1113203101 is a deficient number, since it is larger than the sum of its proper divisors (2436351).

1113203101 is an equidigital number, since it uses as much as digits as its factorization.

1113203101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2436350.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 1113203101 is about 33364.6984251319. The cubic root of 1113203101 is about 1036.3937910192.

Adding to 1113203101 its reverse (1013023111), we get a palindrome (2126226212).

The spelling of 1113203101 in words is "one billion, one hundred thirteen million, two hundred three thousand, one hundred one".