11331220011031 has 4 divisors (see below), whose sum is σ = 11331302284872. Its totient is φ = 11331137737192.

The previous prime is 11331220010983. The next prime is 11331220011071. The reversal of 11331220011031 is 13011002213311.

11331220011031 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 11331220011031 - 2²⁵ = 11331186456599 is a prime.

It is a super-2 number, since 2×11331220011031² (a number of 27 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 (11331220011071) 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, 40929985 + ... + 41205898.

It is an arithmetic number, because the mean of its divisors is an integer number (2832825571218).

Almost surely, 2^{11331220011031} is an apocalyptic number.

11331220011031 is a deficient number, since it is larger than the sum of its proper divisors (82273841).

11331220011031 is an equidigital number, since it uses as much as digits as its factorization.

11331220011031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82273840.

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

Adding to 11331220011031 its reverse (13011002213311), we get a palindrome (24342222224342).

The spelling of 11331220011031 in words is "eleven trillion, three hundred thirty-one billion, two hundred twenty million, eleven thousand, thirty-one".