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315080993 = 3179128657
BaseRepresentation
bin10010110001111…
…100000100100001
3210221212202212102
4102301330010201
51121130042433
651133140145
710544100323
oct2261740441
9727782772
10315080993
11151945017
128962a655
135037b276
142dbbb613
151c9dc4e8
hex12c7c121

315080993 has 8 divisors (see below), whose sum is σ = 329364480. Its totient is φ = 301055040.

The previous prime is 315080981. The next prime is 315081001. The reversal of 315080993 is 399080513.

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 315080993 - 24 = 315080977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (315080923) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61880 + ... + 66777.

It is an arithmetic number, because the mean of its divisors is an integer number (41170560).

Almost surely, 2315080993 is an apocalyptic number.

It is an amenable number.

315080993 is a deficient number, since it is larger than the sum of its proper divisors (14283487).

315080993 is a wasteful number, since it uses less digits than its factorization.

315080993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128767.

The product of its (nonzero) digits is 29160, while the sum is 38.

The square root of 315080993 is about 17750.5209219335. The cubic root of 315080993 is about 680.4675223475.

The spelling of 315080993 in words is "three hundred fifteen million, eighty thousand, nine hundred ninety-three".

Divisors: 1 31 79 2449 128657 3988367 10163903 315080993