2124523231 has 4 divisors (see below), whose sum is σ = 2173930792. Its totient is φ = 2075115672.

The previous prime is 2124523211. The next prime is 2124523237. The reversal of 2124523231 is 1323254212.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-2124523231 is a prime.

It is a super-2 number, since 2×2124523231² = 9027197918117358722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2124523196 and 2124523205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2124523237) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24703716 + ... + 24703801.

It is an arithmetic number, because the mean of its divisors is an integer number (543482698).

Almost surely, 2^2124523231 is an apocalyptic number.

2124523231 is a deficient number, since it is larger than the sum of its proper divisors (49407561).

2124523231 is an equidigital number, since it uses as much as digits as its factorization.

2124523231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49407560.

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

The square root of 2124523231 is about 46092.5507104998. The cubic root of 2124523231 is about 1285.5446385412.

Adding to 2124523231 its reverse (1323254212), we get a palindrome (3447777443).

The spelling of 2124523231 in words is "two billion, one hundred twenty-four million, five hundred twenty-three thousand, two hundred thirty-one".