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315203104 = 25611131429
BaseRepresentation
bin10010110010011…
…001111000100000
3210222002222101001
4102302121320200
51121142444404
651135521344
710545116326
oct2262317040
9728088331
10315203104
11151a18837
1289689254
13503c1a18
142dc0dd16
151ca137a4
hex12c99e20

315203104 has 48 divisors (see below), whose sum is σ = 636756120. Its totient is φ = 153538560.

The previous prime is 315203087. The next prime is 315203113. The reversal of 315203104 is 401302513.

It can be written as a sum of positive squares in 4 ways, for example, as 25522704 + 289680400 = 5052^2 + 17020^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 219862 + ... + 221290.

Almost surely, 2315203104 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 315203104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (318378060).

315203104 is an abundant number, since it is smaller than the sum of its proper divisors (321553016).

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

315203104 is a wasteful number, since it uses less digits than its factorization.

315203104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1613 (or 1605 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 315203104 is about 17753.9602342689. The cubic root of 315203104 is about 680.5554170365. Note that the first 3 decimals are identical.

Adding to 315203104 its reverse (401302513), we get a palindrome (716505617).

The spelling of 315203104 in words is "three hundred fifteen million, two hundred three thousand, one hundred four".

Divisors: 1 2 4 8 16 32 61 113 122 226 244 452 488 904 976 1429 1808 1952 2858 3616 5716 6893 11432 13786 22864 27572 45728 55144 87169 110288 161477 174338 220576 322954 348676 645908 697352 1291816 1394704 2583632 2789408 5167264 9850097 19700194 39400388 78800776 157601552 315203104