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123133001 = 916113441
BaseRepresentation
bin1110101011011…
…01110001001001
322120200210201112
413111231301021
5223010224001
620115100105
73023420225
oct725556111
9276623645
10123133001
1163561712
12352a1635
131c682c84
14124d3785
15ac23cbb
hex756dc49

123133001 has 4 divisors (see below), whose sum is σ = 123155604. Its totient is φ = 123110400.

The previous prime is 123132991. The next prime is 123133019. The reversal of 123133001 is 100331321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 100331321 = 157639053.

It can be written as a sum of positive squares in 2 ways, for example, as 28090000 + 95043001 = 5300^2 + 9749^2 .

It is a cyclic number.

It is not a de Polignac number, because 123133001 - 26 = 123132937 is a prime.

It is a super-3 number, since 3×1231330013 (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123133081) 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, 2441 + ... + 15881.

It is an arithmetic number, because the mean of its divisors is an integer number (30788901).

Almost surely, 2123133001 is an apocalyptic number.

It is an amenable number.

123133001 is a deficient number, since it is larger than the sum of its proper divisors (22603).

123133001 is an equidigital number, since it uses as much as digits as its factorization.

123133001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22602.

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 123133001 is about 11096.5310345170. The cubic root of 123133001 is about 497.4981705782.

Adding to 123133001 its reverse (100331321), we get a palindrome (223464322).

The spelling of 123133001 in words is "one hundred twenty-three million, one hundred thirty-three thousand, one".

Divisors: 1 9161 13441 123133001