2123423433 has 6 divisors (see below), whose sum is σ = 3067167194. Its totient is φ = 1415615616.

The previous prime is 2123423431. The next prime is 2123423443. The reversal of 2123423433 is 3343243212.

It can be written as a sum of positive squares in only one way, i.e., 1261883529 + 861539904 = 35523^2 + 29352^2 .

It is not a de Polignac number, because 2123423433 - 2¹ = 2123423431 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2123423397 and 2123423406.

It is not an unprimeable number, because it can be changed into a prime (2123423431) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 117967960 + ... + 117967977.

Almost surely, 2^2123423433 is an apocalyptic number.

It is an amenable number.

2123423433 is a deficient number, since it is larger than the sum of its proper divisors (943743761).

2123423433 is a wasteful number, since it uses less digits than its factorization.

2123423433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235935943 (or 235935940 counting only the distinct ones).

The product of its digits is 10368, while the sum is 27.

The square root of 2123423433 is about 46080.6188435008. The cubic root of 2123423433 is about 1285.3227717495.

Adding to 2123423433 its reverse (3343243212), we get a palindrome (5466666645).

The spelling of 2123423433 in words is "two billion, one hundred twenty-three million, four hundred twenty-three thousand, four hundred thirty-three".