11031138403 has 4 divisors (see below), whose sum is σ = 11032031520. Its totient is φ = 11030245288.

The previous prime is 11031138383. The next prime is 11031138457. The reversal of 11031138403 is 30483113011.

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

It is a cyclic number.

It is not a de Polignac number, because 11031138403 - 2⁹ = 11031137891 is a prime.

It is a super-2 number, since 2×11031138403² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11031138463) 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, 427768 + ... + 452821.

It is an arithmetic number, because the mean of its divisors is an integer number (2758007880).

Almost surely, 2^11031138403 is an apocalyptic number.

11031138403 is a deficient number, since it is larger than the sum of its proper divisors (893117).

11031138403 is an equidigital number, since it uses as much as digits as its factorization.

11031138403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 893116.

The product of its (nonzero) digits is 864, while the sum is 25.

The spelling of 11031138403 in words is "eleven billion, thirty-one million, one hundred thirty-eight thousand, four hundred three".