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23131023 = 318314211
BaseRepresentation
bin101100000111…
…1001110001111
31121112011210120
41120033032033
521410143043
62143440023
7400416246
oct130171617
947464716
1023131023
1112069753
1278b6013
134a3b5c6
14310195d
15206d983
hex160f38f

23131023 has 8 divisors (see below), whose sum is σ = 30865536. Its totient is φ = 15408600.

The previous prime is 23131001. The next prime is 23131027. The reversal of 23131023 is 32013132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 23131023 - 212 = 23126927 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23130993 and 23131011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23131027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3388 + ... + 7598.

It is an arithmetic number, because the mean of its divisors is an integer number (3858192).

Almost surely, 223131023 is an apocalyptic number.

23131023 is a deficient number, since it is larger than the sum of its proper divisors (7734513).

23131023 is a wasteful number, since it uses less digits than its factorization.

23131023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6045.

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 23131023 is about 4809.4722163664. The cubic root of 23131023 is about 284.9256931549.

Adding to 23131023 its reverse (32013132), we get a palindrome (55144155).

The spelling of 23131023 in words is "twenty-three million, one hundred thirty-one thousand, twenty-three".

Divisors: 1 3 1831 4211 5493 12633 7710341 23131023