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315880331 = 1343156377
BaseRepresentation
bin10010110100111…
…111001110001011
3211000101101100112
4102310333032023
51121331132311
651202224535
710553636624
oct2264771613
9730341315
10315880331
11152340628
128995514b
135059b050
142dd48a4b
151cae928b
hex12d3f38b

315880331 has 8 divisors (see below), whose sum is σ = 340974144. Its totient is φ = 290900160.

The previous prime is 315880319. The next prime is 315880337. The reversal of 315880331 is 133088513.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 315880331 - 218 = 315618187 is a prime.

It is a super-2 number, since 2×3158803312 = 199560767025339122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (315880337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22586 + ... + 33791.

It is an arithmetic number, because the mean of its divisors is an integer number (42621768).

Almost surely, 2315880331 is an apocalyptic number.

315880331 is a deficient number, since it is larger than the sum of its proper divisors (25093813).

315880331 is a wasteful number, since it uses less digits than its factorization.

315880331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56821.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 315880331 is about 17773.0225622993. The cubic root of 315880331 is about 681.0424689406.

The spelling of 315880331 in words is "three hundred fifteen million, eight hundred eighty thousand, three hundred thirty-one".

Divisors: 1 13 431 5603 56377 732901 24298487 315880331