2231203031011 has 4 divisors (see below), whose sum is σ = 2231222522152. Its totient is φ = 2231183539872.

The previous prime is 2231203030967. The next prime is 2231203031077. The reversal of 2231203031011 is 1101303021322.

2231203031011 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 a de Polignac number, because none of the positive numbers 2^k-2231203031011 is a prime.

It is a super-3 number, since 3×2231203031011³ (a number of 38 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2231203031011.

It is not an unprimeable number, because it can be changed into a prime (2231203031311) 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, 9572841 + ... + 9803146.

It is an arithmetic number, because the mean of its divisors is an integer number (557805630538).

Almost surely, 2^{2231203031011} is an apocalyptic number.

2231203031011 is a deficient number, since it is larger than the sum of its proper divisors (19491141).

2231203031011 is a wasteful number, since it uses less digits than its factorization.

2231203031011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19491140.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 2231203031011 its reverse (1101303021322), we get a palindrome (3332506052333).

The spelling of 2231203031011 in words is "two trillion, two hundred thirty-one billion, two hundred three million, thirty-one thousand, eleven".