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23023321231 = 191211753749
BaseRepresentation
bin10101011100010011…
…000000000010001111
32012102112102220022011
4111130103000002033
5334122432234411
614324325402051
71443353000341
oct253423000217
965375386264
1023023321231
119845079009
124566569327
13222bb66201
141185a3d291
158eb3b9c21
hex55c4c008f

23023321231 has 4 divisors (see below), whose sum is σ = 24235075000. Its totient is φ = 21811567464.

The previous prime is 23023321229. The next prime is 23023321271. The reversal of 23023321231 is 13212332032.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 23023321231 - 21 = 23023321229 is a prime.

It is a super-2 number, since 2×230233212312 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23023321271) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 605876856 + ... + 605876893.

It is an arithmetic number, because the mean of its divisors is an integer number (6058768750).

Almost surely, 223023321231 is an apocalyptic number.

23023321231 is a deficient number, since it is larger than the sum of its proper divisors (1211753769).

23023321231 is a wasteful number, since it uses less digits than its factorization.

23023321231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1211753768.

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 23023321231 its reverse (13212332032), we get a palindrome (36235653263).

The spelling of 23023321231 in words is "twenty-three billion, twenty-three million, three hundred twenty-one thousand, two hundred thirty-one".

Divisors: 1 19 1211753749 23023321231