2123312135 has 16 divisors (see below), whose sum is σ = 2913341952. Its totient is φ = 1455300000.

The previous prime is 2123312099. The next prime is 2123312167. The reversal of 2123312135 is 5312133212.

It is not a de Polignac number, because 2123312135 - 2¹⁰ = 2123311111 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2123312135.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67760 + ... + 94010.

It is an arithmetic number, because the mean of its divisors is an integer number (182083872).

Almost surely, 2^2123312135 is an apocalyptic number.

2123312135 is a deficient number, since it is larger than the sum of its proper divisors (790029817).

2123312135 is a wasteful number, since it uses less digits than its factorization.

2123312135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28574.

The product of its digits is 1080, while the sum is 23.

The square root of 2123312135 is about 46079.4111833040. The cubic root of 2123312135 is about 1285.3003148762.

Adding to 2123312135 its reverse (5312133212), we get a palindrome (7435445347).

The spelling of 2123312135 in words is "two billion, one hundred twenty-three million, three hundred twelve thousand, one hundred thirty-five".