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212103663 = 3661106961
BaseRepresentation
bin11001010010001…
…11000111101111
3112210002222112020
430221013013233
5413244304123
633014041223
75153565012
oct1451070757
9483088466
10212103663
11a97aa692
125b049213
1334c34535
1420253379
151394a7e3
hexca471ef

212103663 has 8 divisors (see below), whose sum is σ = 283235376. Its totient is φ = 141187200.

The previous prime is 212103629. The next prime is 212103691. The reversal of 212103663 is 366301212.

It is a happy number.

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

It is not a de Polignac number, because 212103663 - 212 = 212099567 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212103623) 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, 51498 + ... + 55463.

It is an arithmetic number, because the mean of its divisors is an integer number (35404422).

Almost surely, 2212103663 is an apocalyptic number.

212103663 is a deficient number, since it is larger than the sum of its proper divisors (71131713).

212103663 is a wasteful number, since it uses less digits than its factorization.

212103663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107625.

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 212103663 is about 14563.7791455377. The cubic root of 212103663 is about 596.3703677810.

Adding to 212103663 its reverse (366301212), we get a palindrome (578404875).

The spelling of 212103663 in words is "two hundred twelve million, one hundred three thousand, six hundred sixty-three".

Divisors: 1 3 661 1983 106961 320883 70701221 212103663