11012103031 has 4 divisors (see below), whose sum is σ = 11017619352. Its totient is φ = 11006586712.

The previous prime is 11012103029. The next prime is 11012103041. The reversal of 11012103031 is 13030121011.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13030121011 = 67141 ⋅194071.

It is a cyclic number.

It is not a de Polignac number, because 11012103031 - 2¹ = 11012103029 is a prime.

It is a super-2 number, since 2×11012103031² (a number of 21 digits) 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 (11012103041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2755165 + ... + 2759158.

It is an arithmetic number, because the mean of its divisors is an integer number (2754404838).

Almost surely, 2^11012103031 is an apocalyptic number.

11012103031 is a deficient number, since it is larger than the sum of its proper divisors (5516321).

11012103031 is an equidigital number, since it uses as much as digits as its factorization.

11012103031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5516320.

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

Adding to 11012103031 its reverse (13030121011), we get a palindrome (24042224042).

The spelling of 11012103031 in words is "eleven billion, twelve million, one hundred three thousand, thirty-one".