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212202031231 = 3592399246391
BaseRepresentation
bin1100010110100000111…
…0100000100001111111
3202021201201120002121001
43011220032200201333
511434042204444411
6241252333551131
721221364335041
oct3055016404177
9667651502531
10212202031231
1181aa3572933
12351620454a7
131701a29c6b8
14a3b088da91
1557be800dc1
hex31683a087f

212202031231 has 8 divisors (see below), whose sum is σ = 212882688000. Its totient is φ = 211521872760.

The previous prime is 212202031163. The next prime is 212202031243. The reversal of 212202031231 is 132130202212.

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 212202031231 - 229 = 211665160319 is a prime.

It is a super-2 number, since 2×2122020312312 (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212202031199 and 212202031208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212202031291) 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, 738046 + ... + 984436.

It is an arithmetic number, because the mean of its divisors is an integer number (26610336000).

Almost surely, 2212202031231 is an apocalyptic number.

212202031231 is a deficient number, since it is larger than the sum of its proper divisors (680656769).

212202031231 is a wasteful number, since it uses less digits than its factorization.

212202031231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249149.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 212202031231 its reverse (132130202212), we get a palindrome (344332233443).

The spelling of 212202031231 in words is "two hundred twelve billion, two hundred two million, thirty-one thousand, two hundred thirty-one".

Divisors: 1 359 2399 246391 861241 88454369 591092009 212202031231