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34323431 = 78743613
BaseRepresentation
bin1000001011101…
…1101111100111
32101120210220012
42002323233213
532241322211
63223400435
7564513212
oct202735747
971523805
1034323431
111841377a
12b5b311b
137159b2c
1447b6779
15302ed8b
hex20bbbe7

34323431 has 4 divisors (see below), whose sum is σ = 34367832. Its totient is φ = 34279032.

The previous prime is 34323413. The next prime is 34323449. The reversal of 34323431 is 13432343.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13432343 = 17777559.

It is an interprime number because it is at equal distance from previous prime (34323413) and next prime (34323449).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-34323431 is a prime.

It is a super-2 number, since 2×343234312 = 2356195831223522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 34323397 and 34323406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34323451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21020 + ... + 22593.

It is an arithmetic number, because the mean of its divisors is an integer number (8591958).

Almost surely, 234323431 is an apocalyptic number.

34323431 is a deficient number, since it is larger than the sum of its proper divisors (44401).

34323431 is an equidigital number, since it uses as much as digits as its factorization.

34323431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44400.

The product of its digits is 2592, while the sum is 23.

The square root of 34323431 is about 5858.6202300542. The cubic root of 34323431 is about 324.9851859125.

Adding to 34323431 its reverse (13432343), we get a palindrome (47755774).

The spelling of 34323431 in words is "thirty-four million, three hundred twenty-three thousand, four hundred thirty-one".

Divisors: 1 787 43613 34323431