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208212700231 = 2310983052533
BaseRepresentation
bin1100000111101001110…
…0011010110001000111
3201220102200221002021001
43001322130122301013
511402404422401411
6235352424434131
721020463515314
oct3017234326107
9656380832231
10208212700231
1180336706468
123442a018947
1316832945203
14a112b15d0b
155639486dc1
hex307a71ac47

208212700231 has 8 divisors (see below), whose sum is σ = 219258689760. Its totient is φ = 197332816032.

The previous prime is 208212700177. The next prime is 208212700247. The reversal of 208212700231 is 132007212802.

208212700231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 208212700231 - 219 = 208212175943 is a prime.

It is a super-2 number, since 2×2082127002312 (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 208212700231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (208212700261) 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 in 7 ways as a sum of consecutive naturals, for example, 41523760 + ... + 41528773.

It is an arithmetic number, because the mean of its divisors is an integer number (27407336220).

Almost surely, 2208212700231 is an apocalyptic number.

208212700231 is a deficient number, since it is larger than the sum of its proper divisors (11045989529).

208212700231 is a wasteful number, since it uses less digits than its factorization.

208212700231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83052665.

The product of its (nonzero) digits is 2688, while the sum is 28.

The spelling of 208212700231 in words is "two hundred eight billion, two hundred twelve million, seven hundred thousand, two hundred thirty-one".

Divisors: 1 23 109 2507 83052533 1910208259 9052726097 208212700231