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23103132012 = 2234220732309
BaseRepresentation
bin10101100001000011…
…011101000101101100
32012122002121201010000
4111201003131011230
5334303400211022
614340300144300
71445342245002
oct254103350554
965562551100
1023103132012
119886130034
124589238090
13224255b41c
141192496a72
159033d26ac
hex5610dd16c

23103132012 has 60 divisors (see below), whose sum is σ = 60425386560. Its totient is φ = 7697316384.

The previous prime is 23103132007. The next prime is 23103132071. The reversal of 23103132012 is 21023130132.

23103132012 is a `hidden beast` number, since 2 + 310 + 31 + 320 + 1 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 698914 + ... + 731222.

It is an arithmetic number, because the mean of its divisors is an integer number (1007089776).

Almost surely, 223103132012 is an apocalyptic number.

It is an amenable number.

23103132012 is an abundant number, since it is smaller than the sum of its proper divisors (37322254548).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23103132012 is a wasteful number, since it uses less digits than its factorization.

23103132012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34532 (or 34521 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 23103132012 its reverse (21023130132), we get a palindrome (44126262144).

It can be divided in two parts, 2310313 and 2012, that added together give a triangular number (2312325 = T2150).

The spelling of 23103132012 in words is "twenty-three billion, one hundred three million, one hundred thirty-two thousand, twelve".

Divisors: 1 2 3 4 6 9 12 18 27 36 54 81 108 162 324 2207 4414 6621 8828 13242 19863 26484 32309 39726 59589 64618 79452 96927 119178 129236 178767 193854 238356 290781 357534 387708 581562 715068 872343 1163124 1744686 2617029 3489372 5234058 10468116 71305963 142611926 213917889 285223852 427835778 641753667 855671556 1283507334 1925261001 2567014668 3850522002 5775783003 7701044004 11551566006 23103132012