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23132330231 = 3111315742061
BaseRepresentation
bin10101100010110010…
…110101100011110111
32012201010120010112112
4111202302311203313
5334333334031411
614343222041235
71446145364003
oct254262654367
965633503475
1023132330231
1198a066309a
124596b7921b
13224861248a
1411962d7703
15905c4db8b
hex562cb58f7

23132330231 has 16 divisors (see below), whose sum is σ = 24243863808. Its totient is φ = 22046169600.

The previous prime is 23132330227. The next prime is 23132330237. The reversal of 23132330231 is 13203323132.

It is a cyclic number.

It is not a de Polignac number, because 23132330231 - 22 = 23132330227 is a prime.

It is a super-2 number, since 2×231323302312 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23132330197 and 23132330206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23132330237) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 528941 + ... + 571001.

It is an arithmetic number, because the mean of its divisors is an integer number (1515241488).

Almost surely, 223132330231 is an apocalyptic number.

23132330231 is a deficient number, since it is larger than the sum of its proper divisors (1111533577).

23132330231 is a wasteful number, since it uses less digits than its factorization.

23132330231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42362.

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 23132330231 its reverse (13203323132), we get a palindrome (36335653363).

The spelling of 23132330231 in words is "twenty-three billion, one hundred thirty-two million, three hundred thirty thousand, two hundred thirty-one".

Divisors: 1 31 113 157 3503 4867 17741 42061 549971 1303891 4752893 6603577 147339683 204710887 746204201 23132330231