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311201214 = 2351866869
BaseRepresentation
bin10010100011001…
…000110110111110
3210200120122210220
4102203020312332
51114131414324
650514042210
710466111112
oct2243106676
9720518726
10311201214
1114a735095
1288279366
134c62033c
142d48b742
151c4c2b79
hex128c8dbe

311201214 has 8 divisors (see below), whose sum is σ = 622402440. Its totient is φ = 103733736.

The previous prime is 311201207. The next prime is 311201237. The reversal of 311201214 is 412102113.

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

311201214 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 311201193 and 311201202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25933429 + ... + 25933440.

It is an arithmetic number, because the mean of its divisors is an integer number (77800305).

Almost surely, 2311201214 is an apocalyptic number.

311201214 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

311201214 is a wasteful number, since it uses less digits than its factorization.

311201214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51866874.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 311201214 is about 17640.8960656765. The cubic root of 311201214 is about 677.6629793587.

Adding to 311201214 its reverse (412102113), we get a palindrome (723303327).

The spelling of 311201214 in words is "three hundred eleven million, two hundred one thousand, two hundred fourteen".

Divisors: 1 2 3 6 51866869 103733738 155600607 311201214