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212020132231 = 9291907119677
BaseRepresentation
bin1100010101110101100…
…0100111100110000111
3202021021001021200002001
43011131120213212013
511433204123212411
6241222315130131
721214025250205
oct3053530474607
9667231250061
10212020132231
1181a0a923486
1235111143947
1316cbb6b235b
14a394660075
1557ad86edc1
hex315d627987

212020132231 has 8 divisors (see below), whose sum is σ = 212361430320. Its totient is φ = 211679079168.

The previous prime is 212020132201. The next prime is 212020132243. The reversal of 212020132231 is 132231020212.

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 212020132231 - 221 = 212018035079 is a prime.

It is a super-2 number, since 2×2120201322312 (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 = 212020132199 and 212020132208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212020132201) 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, 1711765 + ... + 1831441.

It is an arithmetic number, because the mean of its divisors is an integer number (26545178790).

Almost surely, 2212020132231 is an apocalyptic number.

212020132231 is a deficient number, since it is larger than the sum of its proper divisors (341298089).

212020132231 is a wasteful number, since it uses less digits than its factorization.

212020132231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122513.

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

Adding to 212020132231 its reverse (132231020212), we get a palindrome (344251152443).

The spelling of 212020132231 in words is "two hundred twelve billion, twenty million, one hundred thirty-two thousand, two hundred thirty-one".

Divisors: 1 929 1907 119677 1771603 111179933 228224039 212020132231