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313045 = 5137457
BaseRepresentation
bin1001100011011010101
3120220102021
41030123111
540004140
610413141
72442445
oct1143325
9526367
10313045
111a4217
121311b1
13ac645
1482125
1562b4a
hex4c6d5

313045 has 8 divisors (see below), whose sum is σ = 379224. Its totient is φ = 248064.

The previous prime is 313037. The next prime is 313081. The reversal of 313045 is 540313.

It can be written as a sum of positive squares in 4 ways, for example, as 91204 + 221841 = 302^2 + 471^2 .

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 313045 - 23 = 313037 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 457 + ... + 913.

It is an arithmetic number, because the mean of its divisors is an integer number (47403).

2313045 is an apocalyptic number.

313045 is the 457-th pentagonal number.

It is an amenable number.

313045 is a deficient number, since it is larger than the sum of its proper divisors (66179).

313045 is a wasteful number, since it uses less digits than its factorization.

313045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 599.

The product of its (nonzero) digits is 180, while the sum is 16.

The square root of 313045 is about 559.5042448454. The cubic root of 313045 is about 67.8998670398.

Adding to 313045 its reverse (540313), we get a palindrome (853358).

It can be divided in two parts, 31304 and 5, that multiplied together give a triangular number (156520 = T559).

The spelling of 313045 in words is "three hundred thirteen thousand, forty-five".

Divisors: 1 5 137 457 685 2285 62609 313045