11013020131231 has 4 divisors (see below), whose sum is σ = 11013216389464. Its totient is φ = 11012823873000.

The previous prime is 11013020131229. The next prime is 11013020131279. The reversal of 11013020131231 is 13213102031011.

11013020131231 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 11013020131231 - 2¹ = 11013020131229 is a prime.

It is a super-2 number, since 2×11013020131231² (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 = 11013020131199 and 11013020131208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11013020134231) 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, 98044920 + ... + 98157181.

It is an arithmetic number, because the mean of its divisors is an integer number (2753304097366).

Almost surely, 2^{11013020131231} is an apocalyptic number.

11013020131231 is a deficient number, since it is larger than the sum of its proper divisors (196258233).

11013020131231 is an equidigital number, since it uses as much as digits as its factorization.

11013020131231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196258232.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 11013020131231 its reverse (13213102031011), we get a palindrome (24226122162242).

The spelling of 11013020131231 in words is "eleven trillion, thirteen billion, twenty million, one hundred thirty-one thousand, two hundred thirty-one".