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311031314 = 211612271021
BaseRepresentation
bin10010100010011…
…111011000010010
3210200021000202022
4102202133120102
51114111000224
650510251442
710464502556
oct2242373022
9720230668
10311031314
1114a629480
12881b6b82
134c590bc9
142d445866
151c48c65e
hex1289f612

311031314 has 32 divisors (see below), whose sum is σ = 520091712. Its totient is φ = 138312000.

The previous prime is 311031299. The next prime is 311031359. The reversal of 311031314 is 413130113.

311031314 = 22282 + 22292 + ... + 22882.

It is a junction number, because it is equal to n+sod(n) for n = 311031292 and 311031301.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 304124 + ... + 305144.

It is an arithmetic number, because the mean of its divisors is an integer number (16252866).

Almost surely, 2311031314 is an apocalyptic number.

311031314 is a deficient number, since it is larger than the sum of its proper divisors (209060398).

311031314 is a wasteful number, since it uses less digits than its factorization.

311031314 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1322.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 311031314 is about 17636.0798932189. The cubic root of 311031314 is about 677.5396337611.

Adding to 311031314 its reverse (413130113), we get a palindrome (724161427).

The spelling of 311031314 in words is "three hundred eleven million, thirty-one thousand, three hundred fourteen".

Divisors: 1 2 11 22 61 122 227 454 671 1021 1342 2042 2497 4994 11231 13847 22462 27694 62281 124562 152317 231767 304634 463534 685091 1370182 2549437 5098874 14137787 28275574 155515657 311031314