2023434721 has 24 divisors (see below), whose sum is σ = 2583570752. Its totient is φ = 1550815200.

The previous prime is 2023434713. The next prime is 2023434727. The reversal of 2023434721 is 1274343202.

It is not a de Polignac number, because 2023434721 - 2³ = 2023434713 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2023434721.

It is not an unprimeable number, because it can be changed into a prime (2023434727) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32086 + ... + 71248.

Almost surely, 2^2023434721 is an apocalyptic number.

It is an amenable number.

2023434721 is a deficient number, since it is larger than the sum of its proper divisors (560136031).

2023434721 is a wasteful number, since it uses less digits than its factorization.

2023434721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39253 (or 39242 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 28.

The square root of 2023434721 is about 44982.6046489084. The cubic root of 2023434721 is about 1264.8229367802.

Adding to 2023434721 its reverse (1274343202), we get a palindrome (3297777923).

The spelling of 2023434721 in words is "two billion, twenty-three million, four hundred thirty-four thousand, seven hundred twenty-one".