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BaseRepresentation
bin10101101000100111…
…100000010101101101
32012221221101102212000
4111220213200111231
5340033341214041
614401032002513
71451442636432
oct255047402555
965857342760
1023230023021
119940819137
124603830439
132262928a6a
1411a5287b89
1590e5e9bb6
hex5689e056d

23230023021 has 32 divisors (see below), whose sum is σ = 34589291520. Its totient is φ = 15408360432.

The previous prime is 23230022971. The next prime is 23230023043. The reversal of 23230023021 is 12032003232.

Adding to 23230023021 its reverse (12032003232), we get a palindrome (35262026253).

It is a happy number.

It is not a de Polignac number, because 23230023021 - 26 = 23230022957 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 23230022985 and 23230023003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23230023221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6011536 + ... + 6015398.

It is an arithmetic number, because the mean of its divisors is an integer number (1080915360).

Almost surely, 223230023021 is an apocalyptic number.

It is an amenable number.

23230023021 is a deficient number, since it is larger than the sum of its proper divisors (11359268499).

23230023021 is a wasteful number, since it uses less digits than its factorization.

23230023021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4942 (or 4936 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The spelling of 23230023021 in words is "twenty-three billion, two hundred thirty million, twenty-three thousand, twenty-one".