23420343321 has 40 divisors (see below), whose sum is σ = 36334255584. Its totient is φ = 15022687680.

The previous prime is 23420343281. The next prime is 23420343337. The reversal of 23420343321 is 12334302432.

23420343321 is a `hidden beast` number, since 2 + 3 + 4 + 203 + 433 + 21 = 666.

It is not a de Polignac number, because 23420343321 - 2¹³ = 23420335129 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (23420343341) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 183181 + ... + 283541.

Almost surely, 2^23420343321 is an apocalyptic number.

It is an amenable number.

23420343321 is a deficient number, since it is larger than the sum of its proper divisors (12913912263).

23420343321 is a wasteful number, since it uses less digits than its factorization.

23420343321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100483 (or 100474 counting only the distinct ones).

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

Adding to 23420343321 its reverse (12334302432), we get a palindrome (35754645753).

The spelling of 23420343321 in words is "twenty-three billion, four hundred twenty million, three hundred forty-three thousand, three hundred twenty-one".