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23031212310 = 23251423179833
BaseRepresentation
bin10101011100110001…
…000110100100010110
32012110002021210211100
4111130301012210112
5334131442243220
614325210450530
71443510034401
oct253461064426
965402253740
1023031212310
119849578767
124569133a46
132230699ba2
141186ad4d38
158ebe27d90
hex55cc46916

23031212310 has 48 divisors (see below), whose sum is σ = 59923566144. Its totient is φ = 6137306496.

The previous prime is 23031212293. The next prime is 23031212423. The reversal of 23031212310 is 1321213032.

23031212310 is a `hidden beast` number, since 2 + 30 + 312 + 12 + 310 = 666.

It is a super-2 number, since 2×230312123102 (a number of 22 digits) contains 22 as substring.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38154 + ... + 217986.

It is an arithmetic number, because the mean of its divisors is an integer number (1248407628).

Almost surely, 223031212310 is an apocalyptic number.

23031212310 is an abundant number, since it is smaller than the sum of its proper divisors (36892353834).

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

23031212310 is a wasteful number, since it uses less digits than its factorization.

23031212310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181269 (or 181266 counting only the distinct ones).

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

Adding to 23031212310 its reverse (1321213032), we get a palindrome (24352425342).

The spelling of 23031212310 in words is "twenty-three billion, thirty-one million, two hundred twelve thousand, three hundred ten".

Divisors: 1 2 3 5 6 9 10 15 18 30 45 90 1423 2846 4269 7115 8538 12807 14230 21345 25614 42690 64035 128070 179833 359666 539499 899165 1078998 1618497 1798330 2697495 3236994 5394990 8092485 16184970 255902359 511804718 767707077 1279511795 1535414154 2303121231 2559023590 3838535385 4606242462 7677070770 11515606155 23031212310