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313104020 = 22515655201
BaseRepresentation
bin10010101010011…
…001011010010100
3210211011022222012
4102222121122110
51120123312040
651022523352
710521224465
oct2252313224
9724138865
10313104020
11150814759
1288a36558
134cb38468
142d824d6c
151c74b865
hex12a99694

313104020 has 12 divisors (see below), whose sum is σ = 657518484. Its totient is φ = 125241600.

The previous prime is 313103993. The next prime is 313104031. The reversal of 313104020 is 20401313.

It can be written as a sum of positive squares in 2 ways, for example, as 131285764 + 181818256 = 11458^2 + 13484^2 .

It is a junction number, because it is equal to n+sod(n) for n = 313103986 and 313104004.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 7827581 + ... + 7827620.

It is an arithmetic number, because the mean of its divisors is an integer number (54793207).

Almost surely, 2313104020 is an apocalyptic number.

It is an amenable number.

313104020 is an abundant number, since it is smaller than the sum of its proper divisors (344414464).

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

313104020 is a wasteful number, since it uses less digits than its factorization.

313104020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15655210 (or 15655208 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 313104020 is about 17694.7455477608. The cubic root of 313104020 is about 679.0413394317.

Adding to 313104020 its reverse (20401313), we get a palindrome (333505333).

The spelling of 313104020 in words is "three hundred thirteen million, one hundred four thousand, twenty".

Divisors: 1 2 4 5 10 20 15655201 31310402 62620804 78276005 156552010 313104020