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34004431 = 283120157
BaseRepresentation
bin1000000110110…
…1110111001111
32100222121022101
42001231313033
532201120211
63212455531
7562014166
oct201556717
970877271
1034004431
111821603a
12b47a5a7
137077886
1447323dd
152eba5c1
hex206ddcf

34004431 has 4 divisors (see below), whose sum is σ = 34124872. Its totient is φ = 33883992.

The previous prime is 34004413. The next prime is 34004447. The reversal of 34004431 is 13440043.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 34004431 - 211 = 34002383 is a prime.

It is a super-2 number, since 2×340044312 = 2312602655267522, 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 = 34004399 and 34004408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34004401) 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, 59796 + ... + 60361.

It is an arithmetic number, because the mean of its divisors is an integer number (8531218).

Almost surely, 234004431 is an apocalyptic number.

34004431 is a deficient number, since it is larger than the sum of its proper divisors (120441).

34004431 is a wasteful number, since it uses less digits than its factorization.

34004431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120440.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 34004431 is about 5831.3318375822. The cubic root of 34004431 is about 323.9752527712.

Adding to 34004431 its reverse (13440043), we get a palindrome (47444474).

The spelling of 34004431 in words is "thirty-four million, four thousand, four hundred thirty-one".

Divisors: 1 283 120157 34004431