Search a number
-
+
23312012021 = 157691214883
BaseRepresentation
bin10101101101100000…
…010001001011110101
32020011122122220121122
4111231200101023311
5340220333341041
614413121153325
71453456555424
oct255540211365
966148586548
1023312012021
119983028741
12462718b845
13227690456c
1411b210b2bb
159168e2c4b
hex56d8112f5

23312012021 has 8 divisors (see below), whose sum is σ = 23494557024. Its totient is φ = 23129898480.

The previous prime is 23312011993. The next prime is 23312012039. The reversal of 23312012021 is 12021021332.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-23312012021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23312012081) 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 7 ways as a sum of consecutive naturals, for example, 1046 + ... + 215928.

It is an arithmetic number, because the mean of its divisors is an integer number (2936819628).

Almost surely, 223312012021 is an apocalyptic number.

It is an amenable number.

23312012021 is a deficient number, since it is larger than the sum of its proper divisors (182545003).

23312012021 is a wasteful number, since it uses less digits than its factorization.

23312012021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215731.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 23312012021 its reverse (12021021332), we get a palindrome (35333033353).

The spelling of 23312012021 in words is "twenty-three billion, three hundred twelve million, twelve thousand, twenty-one".

Divisors: 1 157 691 108487 214883 33736631 148484153 23312012021