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1343443431 = 311192279439
BaseRepresentation
bin101000000010011…
…0101000111100111
310110121220222221010
41100010311013213
510222410142211
6341150353303
745202036461
oct12004650747
93417828833
101343443431
1162a37aa30
12315abb833
13185438c55
14ca5cd131
157ce224a6
hex501351e7

1343443431 has 32 divisors (see below), whose sum is σ = 2066227200. Its totient is φ = 767875680.

The previous prime is 1343443403. The next prime is 1343443459.

1343443431 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (1343443403) and next prime (1343443459).

It is not a de Polignac number, because 1343443431 - 25 = 1343443399 is a prime.

It is a super-2 number, since 2×13434434312 = 3609680504594103522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1343443481) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 137610 + ... + 147048.

It is an arithmetic number, because the mean of its divisors is an integer number (64569600).

Almost surely, 21343443431 is an apocalyptic number.

1343443431 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1343443431 is a deficient number, since it is larger than the sum of its proper divisors (722783769).

1343443431 is a wasteful number, since it uses less digits than its factorization.

1343443431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9699.

The product of its digits is 20736, while the sum is 30.

The square root of 1343443431 is about 36653.0139415574. The cubic root of 1343443431 is about 1103.4173150286.

It can be divided in two parts, 13434 and 43431, that added together give a palindrome (56865).

The spelling of 1343443431 in words is "one billion, three hundred forty-three million, four hundred forty-three thousand, four hundred thirty-one".

Divisors: 1 3 11 19 33 57 209 227 627 681 2497 4313 7491 9439 12939 28317 47443 103829 142329 179341 311487 538023 1972751 2142653 5918253 6427959 23569183 40710407 70707549 122131221 447814477 1343443431