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23879231 is a prime number
BaseRepresentation
bin101101100010…
…1111000111111
31122221012010222
41123011320333
522103113411
62211451555
7406653515
oct133057077
948835128
1023879231
111252a902
127bb6bbb
134c4102c
1432584b5
15216a4db
hex16c5e3f

23879231 has 2 divisors, whose sum is σ = 23879232. Its totient is φ = 23879230.

The previous prime is 23879213. The next prime is 23879239. The reversal of 23879231 is 13297832.

Together with previous prime (23879213) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23879231 - 210 = 23878207 is a prime.

It is a super-2 number, since 2×238792312 = 1140435346302722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 23879191 and 23879200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23879239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11939615 + 11939616.

It is an arithmetic number, because the mean of its divisors is an integer number (11939616).

Almost surely, 223879231 is an apocalyptic number.

23879231 is a deficient number, since it is larger than the sum of its proper divisors (1).

23879231 is an equidigital number, since it uses as much as digits as its factorization.

23879231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18144, while the sum is 35.

The square root of 23879231 is about 4886.6380058277. The cubic root of 23879231 is about 287.9652695710.

The spelling of 23879231 in words is "twenty-three million, eight hundred seventy-nine thousand, two hundred thirty-one".