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23203013 = 712811163
BaseRepresentation
bin101100010000…
…0110011000101
31121122211112212
41120200303011
521414444023
62145153205
7401136161
oct130406305
947584485
1023203013
1112108849
12792b805
134a652c2
14311dca1
152084e78
hex1620cc5

23203013 has 8 divisors (see below), whose sum is σ = 23633856. Its totient is φ = 22775200.

The previous prime is 23202961. The next prime is 23203031. The reversal of 23203013 is 31030232.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23203013 - 210 = 23201989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23203073) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19370 + ... + 20532.

It is an arithmetic number, because the mean of its divisors is an integer number (2954232).

Almost surely, 223203013 is an apocalyptic number.

It is an amenable number.

23203013 is a deficient number, since it is larger than the sum of its proper divisors (430843).

23203013 is a wasteful number, since it uses less digits than its factorization.

23203013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1515.

The product of its (nonzero) digits is 108, while the sum is 14.

The square root of 23203013 is about 4816.9505914012. The cubic root of 23203013 is about 285.2209756412.

Adding to 23203013 its reverse (31030232), we get a palindrome (54233245).

The spelling of 23203013 in words is "twenty-three million, two hundred three thousand, thirteen".

Divisors: 1 71 281 1163 19951 82573 326803 23203013