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213231004212 = 22322379682737
BaseRepresentation
bin1100011010010110001…
…1101110101000110100
3202101101102202100011110
43012211203232220310
511443144114113322
6241542412235020
721256030426212
oct3064543565064
9671342670143
10213231004212
1182481385526
12353aa76ba70
1317152512255
14a46b3bdcb2
15582ed06c0c
hex31a58eea34

213231004212 has 24 divisors (see below), whose sum is σ = 499770132736. Its totient is φ = 70758269568.

The previous prime is 213231004187. The next prime is 213231004223. The reversal of 213231004212 is 212400132312.

Adding to 213231004212 its reverse (212400132312), we get a palindrome (425631136524).

213231004212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2132310042122 (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 39838693 + ... + 39844044.

Almost surely, 2213231004212 is an apocalyptic number.

It is an amenable number.

213231004212 is an abundant number, since it is smaller than the sum of its proper divisors (286539128524).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213231004212 is a wasteful number, since it uses less digits than its factorization.

213231004212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79682967 (or 79682965 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The spelling of 213231004212 in words is "two hundred thirteen billion, two hundred thirty-one million, four thousand, two hundred twelve".

Divisors: 1 2 3 4 6 12 223 446 669 892 1338 2676 79682737 159365474 239048211 318730948 478096422 956192844 17769250351 35538500702 53307751053 71077001404 106615502106 213231004212