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318469969 is a prime number
BaseRepresentation
bin10010111110110…
…111011101010001
3211012020221200001
4102332313131101
51123012014334
651333530001
710614643606
oct2276673521
9735227601
10318469969
1115384a224
128a7a3901
1350c9698c
14304206ad
151ce5b714
hex12fb7751

318469969 has 2 divisors, whose sum is σ = 318469970. Its totient is φ = 318469968.

The previous prime is 318469903. The next prime is 318470041. The reversal of 318469969 is 969964813.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 246898369 + 71571600 = 15713^2 + 8460^2 .

It is a cyclic number.

It is not a de Polignac number, because 318469969 - 217 = 318338897 is a prime.

It is a super-2 number, since 2×3184699692 = 202846242309721922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (318469069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159234984 + 159234985.

It is an arithmetic number, because the mean of its divisors is an integer number (159234985).

Almost surely, 2318469969 is an apocalyptic number.

It is an amenable number.

318469969 is a deficient number, since it is larger than the sum of its proper divisors (1).

318469969 is an equidigital number, since it uses as much as digits as its factorization.

318469969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2519424, while the sum is 55.

The square root of 318469969 is about 17845.7269115046. The cubic root of 318469969 is about 682.8985048549.

It can be divided in two parts, 3184 and 69969, that added together give a triangular number (73153 = T382).

The spelling of 318469969 in words is "three hundred eighteen million, four hundred sixty-nine thousand, nine hundred sixty-nine".