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23041031 = 131772387
BaseRepresentation
bin101011111100…
…1010000000111
31121100121100112
41113321100013
521344303111
62141503235
7366563006
oct127712007
947317315
1023041031
1112008082
127871b1b
134a09660
1430bac3d
152051e8b
hex15f9407

23041031 has 4 divisors (see below), whose sum is σ = 24813432. Its totient is φ = 21268632.

The previous prime is 23041021. The next prime is 23041033. The reversal of 23041031 is 13014032.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-23041031 is a prime.

It is a super-2 number, since 2×230410312 = 1061778219085922, 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 = 23040997 and 23041015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23041033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 886181 + ... + 886206.

It is an arithmetic number, because the mean of its divisors is an integer number (6203358).

Almost surely, 223041031 is an apocalyptic number.

23041031 is a deficient number, since it is larger than the sum of its proper divisors (1772401).

23041031 is a wasteful number, since it uses less digits than its factorization.

23041031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1772400.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 23041031 is about 4800.1073946319. The cubic root of 23041031 is about 284.5557086906. Note that the first 3 decimals are identical.

Adding to 23041031 its reverse (13014032), we get a palindrome (36055063).

The spelling of 23041031 in words is "twenty-three million, forty-one thousand, thirty-one".

Divisors: 1 13 1772387 23041031