2123243331043 has 4 divisors (see below), whose sum is σ = 2123792970768. Its totient is φ = 2122693691320.

The previous prime is 2123243330963. The next prime is 2123243331047. The reversal of 2123243331043 is 3401333423212.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2123243331043 - 2³³ = 2114653396451 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2123243330996 and 2123243331014.

It is not an unprimeable number, because it can be changed into a prime (2123243331047) 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, 274814068 + ... + 274821793.

It is an arithmetic number, because the mean of its divisors is an integer number (530948242692).

Almost surely, 2^{2123243331043} is an apocalyptic number.

2123243331043 is a deficient number, since it is larger than the sum of its proper divisors (549639725).

2123243331043 is an equidigital number, since it uses as much as digits as its factorization.

2123243331043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 549639724.

The product of its (nonzero) digits is 31104, while the sum is 31.

Adding to 2123243331043 its reverse (3401333423212), we get a palindrome (5524576754255).

The spelling of 2123243331043 in words is "two trillion, one hundred twenty-three billion, two hundred forty-three million, three hundred thirty-one thousand, forty-three".