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208414031 = 729773433
BaseRepresentation
bin11000110110000…
…10010101001111
3112112011112022012
430123002111033
5411323222111
632403011435
75110330040
oct1433022517
9475145265
10208414031
11a770a601
1259969b7b
1334242017
141d9728c7
151346c48b
hexc6c254f

208414031 has 4 divisors (see below), whose sum is σ = 238187472. Its totient is φ = 178640592.

The previous prime is 208414009. The next prime is 208414061. The reversal of 208414031 is 130414802.

208414031 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-208414031 is a prime.

It is a super-2 number, since 2×2084140312 = 86872816635337922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 208413988 and 208414006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (208414061) 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, 14886710 + ... + 14886723.

It is an arithmetic number, because the mean of its divisors is an integer number (59546868).

Almost surely, 2208414031 is an apocalyptic number.

208414031 is a deficient number, since it is larger than the sum of its proper divisors (29773441).

208414031 is an equidigital number, since it uses as much as digits as its factorization.

208414031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29773440.

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 208414031 is about 14436.5519082640. The cubic root of 208414031 is about 592.8920829984.

Adding to 208414031 its reverse (130414802), we get a palindrome (338828833).

The spelling of 208414031 in words is "two hundred eight million, four hundred fourteen thousand, thirty-one".

Divisors: 1 7 29773433 208414031