2105451313 has 16 divisors (see below), whose sum is σ = 2534353920. Its totient is φ = 1708690896.

The previous prime is 2105451307. The next prime is 2105451317. The reversal of 2105451313 is 3131545012.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2105451313 - 2¹⁷ = 2105320241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2105451317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 298020 + ... + 305002.

It is an arithmetic number, because the mean of its divisors is an integer number (158397120).

Almost surely, 2^2105451313 is an apocalyptic number.

It is an amenable number.

2105451313 is a deficient number, since it is larger than the sum of its proper divisors (428902607).

2105451313 is a wasteful number, since it uses less digits than its factorization.

2105451313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9276.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 2105451313 is about 45885.1971010259. The cubic root of 2105451313 is about 1281.6862770688.

Adding to 2105451313 its reverse (3131545012), we get a palindrome (5236996325).

The spelling of 2105451313 in words is "two billion, one hundred five million, four hundred fifty-one thousand, three hundred thirteen".