2101441231 has 4 divisors (see below), whose sum is σ = 2101918864. Its totient is φ = 2100963600.

The previous prime is 2101441201. The next prime is 2101441241. The reversal of 2101441231 is 1321441012.

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-2101441231 is a prime.

It is a super-2 number, since 2×2101441231² = 8832110494693590722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2101441199 and 2101441208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101441201) 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, 232155 + ... + 241036.

It is an arithmetic number, because the mean of its divisors is an integer number (525479716).

Almost surely, 2^2101441231 is an apocalyptic number.

2101441231 is a deficient number, since it is larger than the sum of its proper divisors (477633).

2101441231 is an equidigital number, since it uses as much as digits as its factorization.

2101441231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 477632.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 2101441231 is about 45841.4793718527. The cubic root of 2101441231 is about 1280.8720520251.

Adding to 2101441231 its reverse (1321441012), we get a palindrome (3422882243).

It can be divided in two parts, 210 and 1441231, that added together give a palindrome (1441441).

The spelling of 2101441231 in words is "two billion, one hundred one million, four hundred forty-one thousand, two hundred thirty-one".