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34423031 = 137251263
BaseRepresentation
bin1000001101010…
…0000011110111
32101202212112002
42003110003313
532303014111
63225445515
7565406456
oct203240367
971685462
1034423031
1118481595
12b64089b
137193276
144800b9d
15304e63b
hex20d40f7

34423031 has 4 divisors (see below), whose sum is σ = 34674432. Its totient is φ = 34171632.

The previous prime is 34423027. The next prime is 34423049. The reversal of 34423031 is 13032443.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13032443 = 59921757.

It is a cyclic number.

It is not a de Polignac number, because 34423031 - 22 = 34423027 is a prime.

It is a super-2 number, since 2×344230312 = 2369890126453922, 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 = 34422994 and 34423012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34423531) 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, 125495 + ... + 125768.

It is an arithmetic number, because the mean of its divisors is an integer number (8668608).

Almost surely, 234423031 is an apocalyptic number.

34423031 is a deficient number, since it is larger than the sum of its proper divisors (251401).

34423031 is a wasteful number, since it uses less digits than its factorization.

34423031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251400.

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 34423031 is about 5867.1143673871. The cubic root of 34423031 is about 325.2992305255.

Adding to 34423031 its reverse (13032443), we get a palindrome (47455474).

The spelling of 34423031 in words is "thirty-four million, four hundred twenty-three thousand, thirty-one".

Divisors: 1 137 251263 34423031