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123023013 = 361766463
BaseRepresentation
bin1110101010100…
…10111010100101
322120111012211220
413111102322211
5222443214023
620112450553
73022451451
oct725227245
9276435756
10123023013
1163497013
1235249a59
131c644ba9
14124a5661
15ac013e3
hex7552ea5

123023013 has 8 divisors (see below), whose sum is σ = 164299008. Its totient is φ = 81881184.

The previous prime is 123023011. The next prime is 123023027. The reversal of 123023013 is 310320321.

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

It is not a de Polignac number, because 123023013 - 21 = 123023011 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 123022983 and 123023001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123023011) 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, 31381 + ... + 35082.

It is an arithmetic number, because the mean of its divisors is an integer number (20537376).

Almost surely, 2123023013 is an apocalyptic number.

It is an amenable number.

123023013 is a deficient number, since it is larger than the sum of its proper divisors (41275995).

123023013 is an equidigital number, since it uses as much as digits as its factorization.

123023013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67083.

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

The square root of 123023013 is about 11091.5739640504. The cubic root of 123023013 is about 497.3499971157.

Adding to 123023013 its reverse (310320321), we get a palindrome (433343334).

The spelling of 123023013 in words is "one hundred twenty-three million, twenty-three thousand, thirteen".

Divisors: 1 3 617 1851 66463 199389 41007671 123023013