2231115541 has 4 divisors (see below), whose sum is σ = 2231236800. Its totient is φ = 2230994284.

The previous prime is 2231115517. The next prime is 2231115559. The reversal of 2231115541 is 1455111322.

2231115541 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, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2231115541 - 2¹³ = 2231107349 is a prime.

It is a super-3 number, since 3×2231115541³ (a number of 29 digits) contains 333 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 (2231115511) 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, 26701 + ... + 71938.

It is an arithmetic number, because the mean of its divisors is an integer number (557809200).

Almost surely, 2^2231115541 is an apocalyptic number.

It is an amenable number.

2231115541 is a deficient number, since it is larger than the sum of its proper divisors (121259).

2231115541 is an equidigital number, since it uses as much as digits as its factorization.

2231115541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121258.

The product of its digits is 1200, while the sum is 25.

The square root of 2231115541 is about 47234.6857828016. The cubic root of 2231115541 is about 1306.6943715998.

Adding to 2231115541 its reverse (1455111322), we get a palindrome (3686226863).

The spelling of 2231115541 in words is "two billion, two hundred thirty-one million, one hundred fifteen thousand, five hundred forty-one".