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315056807 = 1324235139
BaseRepresentation
bin10010110001110…
…110001010100111
3210221211112200122
4102301312022213
51121123304212
651132432155
710543636652
oct2261661247
9727745618
10315056807
1115192892a
128961865b
1350370260
142dbb2899
151c9d5272
hex12c762a7

315056807 has 4 divisors (see below), whose sum is σ = 339291960. Its totient is φ = 290821656.

The previous prime is 315056789. The next prime is 315056809. The reversal of 315056807 is 708650513.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 708650513 = 1098764499.

It is a cyclic number.

It is not a de Polignac number, because 315056807 - 218 = 314794663 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315056809) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12117557 + ... + 12117582.

It is an arithmetic number, because the mean of its divisors is an integer number (84822990).

Almost surely, 2315056807 is an apocalyptic number.

315056807 is a deficient number, since it is larger than the sum of its proper divisors (24235153).

315056807 is a wasteful number, since it uses less digits than its factorization.

315056807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24235152.

The product of its (nonzero) digits is 25200, while the sum is 35.

The square root of 315056807 is about 17749.8396330784. The cubic root of 315056807 is about 680.4501107306.

The spelling of 315056807 in words is "three hundred fifteen million, fifty-six thousand, eight hundred seven".

Divisors: 1 13 24235139 315056807