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315507141 = 32194269
BaseRepresentation
bin10010110011100…
…100000111000101
3210222200102102200
4102303210013011
51121232212031
651150225113
710550523615
oct2263440705
9728612380
10315507141
11152106204
12897b5199
135049a221
142dc8ca45
151ca738e6
hex12ce41c5

315507141 has 30 divisors (see below), whose sum is σ = 482839110. Its totient is φ = 198526896.

The previous prime is 315507139. The next prime is 315507167. The reversal of 315507141 is 141705513.

315507141 is a `hidden beast` number, since 3 + 1 + 550 + 71 + 41 = 666.

It can be written as a sum of positive squares in only one way, i.e., 198218241 + 117288900 = 14079^2 + 10830^2 .

It is not a de Polignac number, because 315507141 - 21 = 315507139 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315507041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 1172755 + ... + 1173023.

It is an arithmetic number, because the mean of its divisors is an integer number (16094637).

Almost surely, 2315507141 is an apocalyptic number.

It is an amenable number.

315507141 is a deficient number, since it is larger than the sum of its proper divisors (167331969).

315507141 is an frugal number, since it uses more digits than its factorization.

315507141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351 (or 291 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 27.

The square root of 315507141 is about 17762.5206826058. The cubic root of 315507141 is about 680.7741622754.

The spelling of 315507141 in words is "three hundred fifteen million, five hundred seven thousand, one hundred forty-one".

Divisors: 1 3 9 19 57 171 269 361 807 1083 2421 3249 5111 6859 15333 20577 45999 61731 97109 130321 291327 390963 873981 1172889 1845071 5535213 16605639 35056349 105169047 315507141