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23100103131 = 372274148371
BaseRepresentation
bin10101100000110111…
…111001100111011011
32012121212220211021020
4111200313321213123
5334302111300011
614340111213523
71445304431310
oct254067714733
965555824236
1023100103131
119884451426
1245882172a3
132241a3a8a1
141191d08d07
15902ed5006
hex560df99db

23100103131 has 16 divisors (see below), whose sum is σ = 35202432768. Its totient is φ = 13199205600.

The previous prime is 23100103123. The next prime is 23100103139. The reversal of 23100103131 is 13130100132.

It is an interprime number because it is at equal distance from previous prime (23100103123) and next prime (23100103139).

It is not a de Polignac number, because 23100103131 - 23 = 23100103123 is a prime.

It is a super-2 number, since 2×231001031312 (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 23100103131.

It is not an unprimeable number, because it can be changed into a prime (23100103139) 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, 453376 + ... + 501746.

It is an arithmetic number, because the mean of its divisors is an integer number (2200152048).

Almost surely, 223100103131 is an apocalyptic number.

23100103131 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

23100103131 is a deficient number, since it is larger than the sum of its proper divisors (12102329637).

23100103131 is a wasteful number, since it uses less digits than its factorization.

23100103131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71122.

The product of its (nonzero) digits is 54, while the sum is 15.

Adding to 23100103131 its reverse (13130100132), we get a palindrome (36230203263).

The spelling of 23100103131 in words is "twenty-three billion, one hundred million, one hundred three thousand, one hundred thirty-one".

Divisors: 1 3 7 21 22741 48371 68223 145113 159187 338597 477561 1015791 1100004911 3300014733 7700034377 23100103131