11031030391 has 4 divisors (see below), whose sum is σ = 11510640432. Its totient is φ = 10551420352.

The previous prime is 11031030371. The next prime is 11031030401. The reversal of 11031030391 is 19303013011.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19303013011 = 2687 ⋅7183853.

It is a cyclic number.

It is not a de Polignac number, because 11031030391 - 2¹¹ = 11031028343 is a prime.

It is a super-2 number, since 2×11031030391² (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 (11031030301) 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, 239804986 + ... + 239805031.

It is an arithmetic number, because the mean of its divisors is an integer number (2877660108).

Almost surely, 2^11031030391 is an apocalyptic number.

11031030391 is a deficient number, since it is larger than the sum of its proper divisors (479610041).

11031030391 is an equidigital number, since it uses as much as digits as its factorization.

11031030391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479610040.

The product of its (nonzero) digits is 243, while the sum is 22.

The spelling of 11031030391 in words is "eleven billion, thirty-one million, thirty thousand, three hundred ninety-one".