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1340323465 = 51320620361
BaseRepresentation
bin100111111100011…
…1011011010001001
310110102001111010211
41033320323122021
510221110322330
6340555441121
745133363405
oct11770733211
93412044124
101340323465
11628639948
12314a561a1
131848b5b10
14ca01a105
157ca07d2a
hex4fe3b689

1340323465 has 8 divisors (see below), whose sum is σ = 1732110408. Its totient is φ = 989777280.

The previous prime is 1340323451. The next prime is 1340323499. The reversal of 1340323465 is 5643230431.

It can be written as a sum of positive squares in 4 ways, for example, as 30173049 + 1310150416 = 5493^2 + 36196^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1340323465 - 27 = 1340323337 is a prime.

It is a Duffinian 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, 10310116 + ... + 10310245.

It is an arithmetic number, because the mean of its divisors is an integer number (216513801).

Almost surely, 21340323465 is an apocalyptic number.

It is an amenable number.

1340323465 is a deficient number, since it is larger than the sum of its proper divisors (391786943).

1340323465 is a wasteful number, since it uses less digits than its factorization.

1340323465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20620379.

The product of its (nonzero) digits is 25920, while the sum is 31.

The square root of 1340323465 is about 36610.4283640604. The cubic root of 1340323465 is about 1102.5624736855.

Adding to 1340323465 its reverse (5643230431), we get a palindrome (6983553896).

The spelling of 1340323465 in words is "one billion, three hundred forty million, three hundred twenty-three thousand, four hundred sixty-five".

Divisors: 1 5 13 65 20620361 103101805 268064693 1340323465