2105531140 has 12 divisors (see below), whose sum is σ = 4421615436. Its totient is φ = 842212448.

The previous prime is 2105531137. The next prime is 2105531161. The reversal of 2105531140 is 411355012.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1507924224 + 597606916 = 38832^2 + 24446^2 .

It is a super-2 number, since 2×2105531140² = 8866522763019399200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52638259 + ... + 52638298.

It is an arithmetic number, because the mean of its divisors is an integer number (368467953).

Almost surely, 2^2105531140 is an apocalyptic number.

2105531140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2105531140 is an abundant number, since it is smaller than the sum of its proper divisors (2316084296).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2105531140 is a wasteful number, since it uses less digits than its factorization.

2105531140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105276566 (or 105276564 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 2105531140 is about 45886.0669484758. The cubic root of 2105531140 is about 1281.7024750017.

Adding to 2105531140 its reverse (411355012), we get a palindrome (2516886152).

The spelling of 2105531140 in words is "two billion, one hundred five million, five hundred thirty-one thousand, one hundred forty".