11311120233031 has 4 divisors (see below), whose sum is σ = 11347490394864. Its totient is φ = 11274750071200.

The previous prime is 11311120232987. The next prime is 11311120233047. The reversal of 11311120233031 is 13033202111311.

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 11311120233031 - 2³¹ = 11308972749383 is a prime.

It is a super-2 number, since 2×11311120233031² (a number of 27 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 = 11311120232993 and 11311120233011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11311120233331) 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, 18185080450 + ... + 18185081071.

It is an arithmetic number, because the mean of its divisors is an integer number (2836872598716).

Almost surely, 2^{11311120233031} is an apocalyptic number.

11311120233031 is a deficient number, since it is larger than the sum of its proper divisors (36370161833).

11311120233031 is an equidigital number, since it uses as much as digits as its factorization.

11311120233031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36370161832.

The product of its (nonzero) digits is 324, while the sum is 22.

Adding to 11311120233031 its reverse (13033202111311), we get a palindrome (24344322344342).

The spelling of 11311120233031 in words is "eleven trillion, three hundred eleven billion, one hundred twenty million, two hundred thirty-three thousand, thirty-one".