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212973341 = 730424763
BaseRepresentation
bin11001011000110…
…11011100011101
3112211202011111112
430230123130131
5414010121331
633044431405
75164146350
oct1454333435
9484664445
10212973341
11aa244029
125b3a8565
133517a339
14203dc297
1513a6d32b
hexcb1b71d

212973341 has 4 divisors (see below), whose sum is σ = 243398112. Its totient is φ = 182548572.

The previous prime is 212973323. The next prime is 212973359. The reversal of 212973341 is 143379212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (212973323) and next prime (212973359).

It is a cyclic number.

It is not a de Polignac number, because 212973341 - 218 = 212711197 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212973298 and 212973307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212973301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15212375 + ... + 15212388.

It is an arithmetic number, because the mean of its divisors is an integer number (60849528).

Almost surely, 2212973341 is an apocalyptic number.

It is an amenable number.

212973341 is a deficient number, since it is larger than the sum of its proper divisors (30424771).

212973341 is an equidigital number, since it uses as much as digits as its factorization.

212973341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30424770.

The product of its digits is 9072, while the sum is 32.

The square root of 212973341 is about 14593.6061684561. The cubic root of 212973341 is about 597.1843454475.

The spelling of 212973341 in words is "two hundred twelve million, nine hundred seventy-three thousand, three hundred forty-one".

Divisors: 1 7 30424763 212973341