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34031431 = 73472111
BaseRepresentation
bin1000000111010…
…0011101000111
32101000222100101
42001310131013
532203001211
63213224531
7562156000
oct201643507
971028311
1034031431
1118234355
12b492147
137086c55
14473c1a7
152ec35c1
hex2074747

34031431 has 16 divisors (see below), whose sum is σ = 40550400. Its totient is φ = 28535640.

The previous prime is 34031429. The next prime is 34031443. The reversal of 34031431 is 13413043.

It is not a de Polignac number, because 34031431 - 21 = 34031429 is a prime.

It is a super-2 number, since 2×340314312 = 2316276591815522, 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 = 34031399 and 34031408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34035431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15066 + ... + 17176.

It is an arithmetic number, because the mean of its divisors is an integer number (2534400).

Almost surely, 234031431 is an apocalyptic number.

34031431 is a deficient number, since it is larger than the sum of its proper divisors (6518969).

34031431 is an equidigital number, since it uses as much as digits as its factorization.

34031431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2179 (or 2165 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 34031431 is about 5833.6464582626. The cubic root of 34031431 is about 324.0609770668.

Adding to 34031431 its reverse (13413043), we get a palindrome (47444474).

The spelling of 34031431 in words is "thirty-four million, thirty-one thousand, four hundred thirty-one".

Divisors: 1 7 47 49 329 343 2111 2303 14777 16121 99217 103439 694519 724073 4861633 34031431