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34421431 = 113129221
BaseRepresentation
bin1000001101001…
…1101010110111
32101202210022211
42003103222313
532302441211
63225434251
7565402012
oct203235267
971683284
1034421431
1118480370
12b63b987
137192615
144800379
15304de21
hex20d3ab7

34421431 has 4 divisors (see below), whose sum is σ = 37550664. Its totient is φ = 31292200.

The previous prime is 34421423. The next prime is 34421441. The reversal of 34421431 is 13412443.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13412443 = 111219313.

It is a cyclic number.

It is not a de Polignac number, because 34421431 - 23 = 34421423 is a prime.

It is a super-2 number, since 2×344214312 = 2369669824175522, which contains 22 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34421441) 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, 1564600 + ... + 1564621.

It is an arithmetic number, because the mean of its divisors is an integer number (9387666).

Almost surely, 234421431 is an apocalyptic number.

34421431 is a deficient number, since it is larger than the sum of its proper divisors (3129233).

34421431 is a wasteful number, since it uses less digits than its factorization.

34421431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3129232.

The product of its digits is 1152, while the sum is 22.

The square root of 34421431 is about 5866.9780125717. The cubic root of 34421431 is about 325.2941904228.

Adding to 34421431 its reverse (13412443), we get a palindrome (47833874).

The spelling of 34421431 in words is "thirty-four million, four hundred twenty-one thousand, four hundred thirty-one".

Divisors: 1 11 3129221 34421431