11311310231 has 24 divisors (see below), whose sum is σ = 12786749136. Its totient is φ = 9945936000.

The previous prime is 11311310209. The next prime is 11311310243. The reversal of 11311310231 is 13201311311.

11311310231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11311310231 - 2¹⁸ = 11311048087 is a prime.

It is a super-2 number, since 2×11311310231² (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 (11311310291) 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 23 ways as a sum of consecutive naturals, for example, 1722851 + ... + 1729403.

It is an arithmetic number, because the mean of its divisors is an integer number (532781214).

Almost surely, 2^11311310231 is an apocalyptic number.

11311310231 is a deficient number, since it is larger than the sum of its proper divisors (1475438905).

11311310231 is a wasteful number, since it uses less digits than its factorization.

11311310231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6863 (or 6840 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 17.

Adding to 11311310231 its reverse (13201311311), we get a palindrome (24512621542).

The spelling of 11311310231 in words is "eleven billion, three hundred eleven million, three hundred ten thousand, two hundred thirty-one".