2105403231 has 16 divisors (see below), whose sum is σ = 2835070560. Its totient is φ = 1389696000.

The previous prime is 2105403229. The next prime is 2105403263. The reversal of 2105403231 is 1323045012.

It is not a de Polignac number, because 2105403231 - 2¹ = 2105403229 is a prime.

It is a super-3 number, since 3×2105403231³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 2105403198 and 2105403207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2105403221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 379981 + ... + 385481.

It is an arithmetic number, because the mean of its divisors is an integer number (177191910).

Almost surely, 2^2105403231 is an apocalyptic number.

2105403231 is a deficient number, since it is larger than the sum of its proper divisors (729667329).

2105403231 is a wasteful number, since it uses less digits than its factorization.

2105403231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6746.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 2105403231 is about 45884.6731599997. The cubic root of 2105403231 is about 1281.6765204102.

Adding to 2105403231 its reverse (1323045012), we get a palindrome (3428448243).

The spelling of 2105403231 in words is "two billion, one hundred five million, four hundred three thousand, two hundred thirty-one".