11003113031 has 4 divisors (see below), whose sum is σ = 11650354992. Its totient is φ = 10355871072.

The previous prime is 11003113027. The next prime is 11003113067. The reversal of 11003113031 is 13031130011.

It is a happy number.

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 11003113031 - 2² = 11003113027 is a prime.

It is a super-2 number, since 2×11003113031² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11003112997 and 11003113015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11003113081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 323620955 + ... + 323620988.

It is an arithmetic number, because the mean of its divisors is an integer number (2912588748).

Almost surely, 2^11003113031 is an apocalyptic number.

11003113031 is a deficient number, since it is larger than the sum of its proper divisors (647241961).

11003113031 is an equidigital number, since it uses as much as digits as its factorization.

11003113031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 647241960.

The product of its (nonzero) digits is 27, while the sum is 14.

Adding to 11003113031 its reverse (13031130011), we get a palindrome (24034243042).

The spelling of 11003113031 in words is "eleven billion, three million, one hundred thirteen thousand, thirty-one".