11155302031 has 4 divisors (see below), whose sum is σ = 11254021632. Its totient is φ = 11056582432.

The previous prime is 11155302019. The next prime is 11155302049. The reversal of 11155302031 is 13020355111.

11155302031 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 11155302031 - 2¹⁹ = 11154777743 is a prime.

It is a super-2 number, since 2×11155302031² (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 = 11155301993 and 11155302011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11155302071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49359631 + ... + 49359856.

It is an arithmetic number, because the mean of its divisors is an integer number (2813505408).

Almost surely, 2^11155302031 is an apocalyptic number.

11155302031 is a deficient number, since it is larger than the sum of its proper divisors (98719601).

11155302031 is an equidigital number, since it uses as much as digits as its factorization.

11155302031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98719600.

The product of its (nonzero) digits is 450, while the sum is 22.

Adding to 11155302031 its reverse (13020355111), we get a palindrome (24175657142).

The spelling of 11155302031 in words is "eleven billion, one hundred fifty-five million, three hundred two thousand, thirty-one".