2123343434 has 4 divisors (see below), whose sum is σ = 3185015154. Its totient is φ = 1061671716.

The previous prime is 2123343413. The next prime is 2123343437. The reversal of 2123343434 is 4343433212.

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

It can be written as a sum of positive squares in only one way, i.e., 1483405225 + 639938209 = 38515^2 + 25297^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2123343397 and 2123343406.

It is not an unprimeable number, because it can be changed into a prime (2123343437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 530835857 + ... + 530835860.

Almost surely, 2^2123343434 is an apocalyptic number.

2123343434 is a deficient number, since it is larger than the sum of its proper divisors (1061671720).

2123343434 is a wasteful number, since it uses less digits than its factorization.

2123343434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1061671719.

The product of its digits is 20736, while the sum is 29.

The square root of 2123343434 is about 46079.7508022776. The cubic root of 2123343434 is about 1285.3066302323.

Adding to 2123343434 its reverse (4343433212), we get a palindrome (6466776646).

The spelling of 2123343434 in words is "two billion, one hundred twenty-three million, three hundred forty-three thousand, four hundred thirty-four".