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316813025 = 5231421971
BaseRepresentation
bin10010111000100…
…010111011100001
3211002010202202202
4102320202323201
51122101004100
651234222545
710564603064
oct2270427341
9732122682
10316813025
11152918351
128a124a55
1350836739
143010c8db
151cc307d5
hex12e22ee1

316813025 has 24 divisors (see below), whose sum is σ = 406902528. Its totient is φ = 244440000.

The previous prime is 316812967. The next prime is 316813031. The reversal of 316813025 is 520318613.

It is not a de Polignac number, because 316813025 - 216 = 316747489 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 325790 + ... + 326760.

It is an arithmetic number, because the mean of its divisors is an integer number (16954272).

Almost surely, 2316813025 is an apocalyptic number.

It is an amenable number.

316813025 is a deficient number, since it is larger than the sum of its proper divisors (90089503).

316813025 is a wasteful number, since it uses less digits than its factorization.

316813025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1433 (or 1428 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 316813025 is about 17799.2422591525. The cubic root of 316813025 is about 681.7121107855.

The spelling of 316813025 in words is "three hundred sixteen million, eight hundred thirteen thousand, twenty-five".

Divisors: 1 5 25 31 155 421 775 971 2105 4855 10525 13051 24275 30101 65255 150505 326275 408791 752525 2043955 10219775 12672521 63362605 316813025