2131807105 has 16 divisors (see below), whose sum is σ = 2575088640. Its totient is φ = 1694202048.

The previous prime is 2131807103. The next prime is 2131807127. The reversal of 2131807105 is 5017081312.

It is a cyclic number.

It is not a de Polignac number, because 2131807105 - 2¹ = 2131807103 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2131807103) 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, 551359 + ... + 555211.

It is an arithmetic number, because the mean of its divisors is an integer number (160943040).

Almost surely, 2^2131807105 is an apocalyptic number.

It is an amenable number.

2131807105 is a deficient number, since it is larger than the sum of its proper divisors (443281535).

2131807105 is a wasteful number, since it uses less digits than its factorization.

2131807105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4560.

The product of its (nonzero) digits is 1680, while the sum is 28.

The square root of 2131807105 is about 46171.4966727309. The cubic root of 2131807105 is about 1287.0121151413.

Adding to 2131807105 its reverse (5017081312), we get a palindrome (7148888417).

The spelling of 2131807105 in words is "two billion, one hundred thirty-one million, eight hundred seven thousand, one hundred five".