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123230033 = 139886547
BaseRepresentation
bin1110101100001…
…01011101010001
322120212201211022
413112011131101
5223021330113
620121125225
73024303143
oct726053521
9276781738
10123230033
1163618603
1235329815
131c6b81a4
141251ac93
15ac42908
hex7585751

123230033 has 4 divisors (see below), whose sum is σ = 124116720. Its totient is φ = 122343348.

The previous prime is 123230027. The next prime is 123230039. The reversal of 123230033 is 330032321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 330032321 = 895136871.

It is an interprime number because it is at equal distance from previous prime (123230027) and next prime (123230039).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-123230033 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123229993 and 123230020.

It is not an unprimeable number, because it can be changed into a prime (123230039) 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, 443135 + ... + 443412.

It is an arithmetic number, because the mean of its divisors is an integer number (31029180).

Almost surely, 2123230033 is an apocalyptic number.

It is an amenable number.

123230033 is a deficient number, since it is larger than the sum of its proper divisors (886687).

123230033 is an equidigital number, since it uses as much as digits as its factorization.

123230033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 886686.

The product of its (nonzero) digits is 324, while the sum is 17.

The square root of 123230033 is about 11100.9023507101. The cubic root of 123230033 is about 497.6288167560.

Adding to 123230033 its reverse (330032321), we get a palindrome (453262354).

The spelling of 123230033 in words is "one hundred twenty-three million, two hundred thirty thousand, thirty-three".

Divisors: 1 139 886547 123230033