Search a number
-
+
123213130213 = 1724592947471
BaseRepresentation
bin111001011000000010…
…0110010100111100101
3102210000221020112112011
41302300010302213211
54004320030131323
6132334152554221
711621223216655
oct1626004624745
9383027215464
10123213130213
1148288666438
121ba679b2971
13b807aa2454
145d6bd8c365
1533120e920d
hex1cb01329e5

123213130213 has 8 divisors (see below), whose sum is σ = 130514060160. Its totient is φ = 115918100160.

The previous prime is 123213130169. The next prime is 123213130289. The reversal of 123213130213 is 312031312321.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-123213130213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123213133213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1431933 + ... + 1515538.

It is an arithmetic number, because the mean of its divisors is an integer number (16314257520).

Almost surely, 2123213130213 is an apocalyptic number.

It is an amenable number.

123213130213 is a deficient number, since it is larger than the sum of its proper divisors (7300929947).

123213130213 is a wasteful number, since it uses less digits than its factorization.

123213130213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2949947.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 123213130213 its reverse (312031312321), we get a palindrome (435244442534).

The spelling of 123213130213 in words is "one hundred twenty-three billion, two hundred thirteen million, one hundred thirty thousand, two hundred thirteen".

Divisors: 1 17 2459 41803 2947471 50107007 7247831189 123213130213