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212012333031 = 3255727638161
BaseRepresentation
bin1100010101110011101…
…0110111011111100111
3202021020111121102120210
43011130322313133213
511433200124124111
6241221440030503
721213602045052
oct3053472673747
9667214542523
10212012333031
1181a06486864
123510a602433
1316cb9bb1445
14a3935cda99
1557acd2e0a6
hex315ceb77e7

212012333031 has 8 divisors (see below), whose sum is σ = 282793673584. Its totient is φ = 141286273920.

The previous prime is 212012333021. The next prime is 212012333069. The reversal of 212012333031 is 130333210212.

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

It is not a de Polignac number, because 212012333031 - 25 = 212012332999 is a prime.

It is a super-2 number, since 2×2120123330312 (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 = 212012332989 and 212012333007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212012333021) 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, 13811410 + ... + 13826751.

It is an arithmetic number, because the mean of its divisors is an integer number (35349209198).

Almost surely, 2212012333031 is an apocalyptic number.

212012333031 is a deficient number, since it is larger than the sum of its proper divisors (70781340553).

212012333031 is a wasteful number, since it uses less digits than its factorization.

212012333031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27640721.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 212012333031 its reverse (130333210212), we get a palindrome (342345543243).

The spelling of 212012333031 in words is "two hundred twelve billion, twelve million, three hundred thirty-three thousand, thirty-one".

Divisors: 1 3 2557 7671 27638161 82914483 70670777677 212012333031