11030031103 has 32 divisors (see below), whose sum is σ = 14547326976. Its totient is φ = 8114646528.

The previous prime is 11030031101. The next prime is 11030031151. The reversal of 11030031103 is 30113003011.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 11030031103 - 2¹ = 11030031101 is a prime.

It is a super-2 number, since 2×11030031103² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11030031101) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 85450 + ... + 171352.

It is an arithmetic number, because the mean of its divisors is an integer number (454603968).

Almost surely, 2^11030031103 is an apocalyptic number.

11030031103 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

11030031103 is a deficient number, since it is larger than the sum of its proper divisors (3517295873).

11030031103 is a wasteful number, since it uses less digits than its factorization.

11030031103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86023.

The product of its (nonzero) digits is 27, while the sum is 13.

Adding to 11030031103 its reverse (30113003011), we get a palindrome (41143034114).

The spelling of 11030031103 in words is "eleven billion, thirty million, thirty-one thousand, one hundred three".