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23130120023 = 37625138379
BaseRepresentation
bin10101100010101010…
…011001111101010111
32012200222101211200222
4111202222121331113
5334332302320043
614343102424555
71446120530153
oct254252317527
965628354628
1023130120023
11989a39357a
12459629215b
13224801a46a
141195cc0063
15905963d68
hex562a99f57

23130120023 has 4 divisors (see below), whose sum is σ = 23755258440. Its totient is φ = 22504981608.

The previous prime is 23130119939. The next prime is 23130120037. The reversal of 23130120023 is 32002103132.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-23130120023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23130119983 and 23130120010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23130120043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 312569153 + ... + 312569226.

It is an arithmetic number, because the mean of its divisors is an integer number (5938814610).

Almost surely, 223130120023 is an apocalyptic number.

23130120023 is a deficient number, since it is larger than the sum of its proper divisors (625138417).

23130120023 is an equidigital number, since it uses as much as digits as its factorization.

23130120023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 625138416.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 23130120023 its reverse (32002103132), we get a palindrome (55132223155).

The spelling of 23130120023 in words is "twenty-three billion, one hundred thirty million, one hundred twenty thousand, twenty-three".

Divisors: 1 37 625138379 23130120023