11231020113231 has 16 divisors (see below), whose sum is σ = 15764092553600. Its totient is φ = 7092710072928.

The previous prime is 11231020113221. The next prime is 11231020113251. The reversal of 11231020113231 is 13231102013211.

It is not a de Polignac number, because 11231020113231 - 2¹⁵ = 11231020080463 is a prime.

It is a super-2 number, since 2×11231020113231² (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 = 11231020113198 and 11231020113207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11231020113221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7136716 + ... + 8567073.

It is an arithmetic number, because the mean of its divisors is an integer number (985255784600).

Almost surely, 2^{11231020113231} is an apocalyptic number.

11231020113231 is a deficient number, since it is larger than the sum of its proper divisors (4533072440369).

11231020113231 is a wasteful number, since it uses less digits than its factorization.

11231020113231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15716358.

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 11231020113231 its reverse (13231102013211), we get a palindrome (24462122126442).

The spelling of 11231020113231 in words is "eleven trillion, two hundred thirty-one billion, twenty million, one hundred thirteen thousand, two hundred thirty-one".