2125312243 has 16 divisors (see below), whose sum is σ = 2186955936. Its totient is φ = 2064591360.

The previous prime is 2125312213. The next prime is 2125312253. The reversal of 2125312243 is 3422135212.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2125312243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2125312213) 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, 2899105 + ... + 2899837.

It is an arithmetic number, because the mean of its divisors is an integer number (136684746).

Almost surely, 2^2125312243 is an apocalyptic number.

2125312243 is a deficient number, since it is larger than the sum of its proper divisors (61643693).

2125312243 is a wasteful number, since it uses less digits than its factorization.

2125312243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1254.

The product of its digits is 2880, while the sum is 25.

The square root of 2125312243 is about 46101.1089129101. The cubic root of 2125312243 is about 1285.7037620238.

Adding to 2125312243 its reverse (3422135212), we get a palindrome (5547447455).

The spelling of 2125312243 in words is "two billion, one hundred twenty-five million, three hundred twelve thousand, two hundred forty-three".