2131124243 has 16 divisors (see below), whose sum is σ = 2233142784. Its totient is φ = 2032121760.

The previous prime is 2131124239. The next prime is 2131124249. The reversal of 2131124243 is 3424211312.

It is a cyclic number.

It is not a de Polignac number, because 2131124243 - 2² = 2131124239 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2131124249) 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, 303296 + ... + 310242.

It is an arithmetic number, because the mean of its divisors is an integer number (139571424).

Almost surely, 2^2131124243 is an apocalyptic number.

2131124243 is a deficient number, since it is larger than the sum of its proper divisors (102018541).

2131124243 is a wasteful number, since it uses less digits than its factorization.

2131124243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7162.

The product of its digits is 1152, while the sum is 23.

The square root of 2131124243 is about 46164.1012367835. The cubic root of 2131124243 is about 1286.8746815808.

Adding to 2131124243 its reverse (3424211312), we get a palindrome (5555335555).

It can be divided in two parts, 21311 and 24243, that added together give a palindrome (45554).

The spelling of 2131124243 in words is "two billion, one hundred thirty-one million, one hundred twenty-four thousand, two hundred forty-three".