2105141531 has 4 divisors (see below), whose sum is σ = 2105501112. Its totient is φ = 2104781952.

The previous prime is 2105141527. The next prime is 2105141543. The reversal of 2105141531 is 1351415012.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2105141531 - 2² = 2105141527 is a prime.

It is a super-2 number, since 2×2105141531² = 8863241731082047922, 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 = 2105141497 and 2105141506.

It is not an unprimeable number, because it can be changed into a prime (2105141231) 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, 170861 + ... + 182766.

It is an arithmetic number, because the mean of its divisors is an integer number (526375278).

Almost surely, 2^2105141531 is an apocalyptic number.

2105141531 is a deficient number, since it is larger than the sum of its proper divisors (359581).

2105141531 is an equidigital number, since it uses as much as digits as its factorization.

2105141531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359580.

The product of its (nonzero) digits is 600, while the sum is 23.

The square root of 2105141531 is about 45881.8213566114. The cubic root of 2105141531 is about 1281.6234144084.

Adding to 2105141531 its reverse (1351415012), we get a palindrome (3456556543).

The spelling of 2105141531 in words is "two billion, one hundred five million, one hundred forty-one thousand, five hundred thirty-one".