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123023231 is a prime number
BaseRepresentation
bin1110101010100…
…10111101111111
322120111020010222
413111102331333
5222443220411
620112451555
73022452212
oct725227577
9276436128
10123023231
11634971a1
1235249bbb
131c645016
14124a5779
15ac014db
hex7552f7f

123023231 has 2 divisors, whose sum is σ = 123023232. Its totient is φ = 123023230.

The previous prime is 123023227. The next prime is 123023269. The reversal of 123023231 is 132320321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 123023231 - 22 = 123023227 is a prime.

It is a super-2 number, since 2×1230232312 = 30269430731358722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123023281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61511615 + 61511616.

It is an arithmetic number, because the mean of its divisors is an integer number (61511616).

Almost surely, 2123023231 is an apocalyptic number.

123023231 is a deficient number, since it is larger than the sum of its proper divisors (1).

123023231 is an equidigital number, since it uses as much as digits as its factorization.

123023231 is an odious number, because the sum of its binary digits is odd.

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

The square root of 123023231 is about 11091.5837913257. The cubic root of 123023231 is about 497.3502908879.

Adding to 123023231 its reverse (132320321), we get a palindrome (255343552).

The spelling of 123023231 in words is "one hundred twenty-three million, twenty-three thousand, two hundred thirty-one".