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34130431 = 35119721
BaseRepresentation
bin1000001000110…
…0100111111111
32101020000011001
42002030213333
532214133211
63215311131
7563050426
oct202144777
971200131
1034130431
11182a1775
12b51b4a7
1370c002a
1447662bd
152ee2ac1
hex208c9ff

34130431 has 4 divisors (see below), whose sum is σ = 34143664. Its totient is φ = 34117200.

The previous prime is 34130429. The next prime is 34130461. The reversal of 34130431 is 13403143.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 34130431 - 21 = 34130429 is a prime.

It is a super-2 number, since 2×341304312 = 2329772640491522, 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 = 34130399 and 34130408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34130401) 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, 1350 + ... + 8371.

It is an arithmetic number, because the mean of its divisors is an integer number (8535916).

Almost surely, 234130431 is an apocalyptic number.

34130431 is a deficient number, since it is larger than the sum of its proper divisors (13233).

34130431 is an equidigital number, since it uses as much as digits as its factorization.

34130431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13232.

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

The square root of 34130431 is about 5842.1255549671. The cubic root of 34130431 is about 324.3749121192.

Adding to 34130431 its reverse (13403143), we get a palindrome (47533574).

The spelling of 34130431 in words is "thirty-four million, one hundred thirty thousand, four hundred thirty-one".

Divisors: 1 3511 9721 34130431