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23004131231 = 196131197479
BaseRepresentation
bin10101011011001001…
…110010111110011111
32012101012022221120102
4111123021302332133
5334103024144411
614322402211315
71443030613664
oct253311627637
965335287512
1023004131231
119835261304
124560053b3b
132227ba7693
141183285a6b
158e9878d3b
hex55b272f9f

23004131231 has 8 divisors (see below), whose sum is σ = 24218947200. Its totient is φ = 21789722520.

The previous prime is 23004131207. The next prime is 23004131239. The reversal of 23004131231 is 13213140032.

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

It is a cyclic number.

It is not a de Polignac number, because 23004131231 - 26 = 23004131167 is a prime.

It is a super-2 number, since 2×230041312312 (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 (23004131239) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17750 + ... + 215228.

It is an arithmetic number, because the mean of its divisors is an integer number (3027368400).

Almost surely, 223004131231 is an apocalyptic number.

23004131231 is a deficient number, since it is larger than the sum of its proper divisors (1214815969).

23004131231 is a wasteful number, since it uses less digits than its factorization.

23004131231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203629.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 23004131231 its reverse (13213140032), we get a palindrome (36217271263).

The spelling of 23004131231 in words is "twenty-three billion, four million, one hundred thirty-one thousand, two hundred thirty-one".

Divisors: 1 19 6131 116489 197479 3752101 1210743749 23004131231