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313010020 = 22515650501
BaseRepresentation
bin10010101010000…
…010011101100100
3210210222120000201
4102222002131210
51120112310040
651020520244
710520353441
oct2252023544
9723876021
10313010020
11150760074
12889b0084
134cb0473b
142d7dc9c8
151c72da9a
hex12a82764

313010020 has 12 divisors (see below), whose sum is σ = 657321084. Its totient is φ = 125204000.

The previous prime is 313010011. The next prime is 313010039. The reversal of 313010020 is 20010313.

It can be written as a sum of positive squares in 2 ways, for example, as 160833124 + 152176896 = 12682^2 + 12336^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 313009979 and 313010006.

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, 7825231 + ... + 7825270.

It is an arithmetic number, because the mean of its divisors is an integer number (54776757).

Almost surely, 2313010020 is an apocalyptic number.

It is an amenable number.

313010020 is an abundant number, since it is smaller than the sum of its proper divisors (344311064).

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

313010020 is a wasteful number, since it uses less digits than its factorization.

313010020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15650510 (or 15650508 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 10.

The square root of 313010020 is about 17692.0891926307. The cubic root of 313010020 is about 678.9733787642.

Adding to 313010020 its reverse (20010313), we get a palindrome (333020333).

The spelling of 313010020 in words is "three hundred thirteen million, ten thousand, twenty".

Divisors: 1 2 4 5 10 20 15650501 31301002 62602004 78252505 156505010 313010020