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23207313 = 331249541
BaseRepresentation
bin101100010000…
…1110110010001
31121200001110010
41120201312101
521420113223
62145225133
7401154543
oct130416621
947601403
1023207313
1112110aa8
1279321a9
134a6724c
143121693
152086393
hex1621d91

23207313 has 8 divisors (see below), whose sum is σ = 31941376. Its totient is φ = 14972400.

The previous prime is 23207311. The next prime is 23207321. The reversal of 23207313 is 31370232.

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

It is not a de Polignac number, because 23207313 - 21 = 23207311 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23207313.

It is not an unprimeable number, because it can be changed into a prime (23207311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 124678 + ... + 124863.

It is an arithmetic number, because the mean of its divisors is an integer number (3992672).

Almost surely, 223207313 is an apocalyptic number.

It is an amenable number.

23207313 is a deficient number, since it is larger than the sum of its proper divisors (8734063).

23207313 is a wasteful number, since it uses less digits than its factorization.

23207313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249575.

The product of its (nonzero) digits is 756, while the sum is 21.

The square root of 23207313 is about 4817.3969111959. The cubic root of 23207313 is about 285.2385936755.

Adding to 23207313 its reverse (31370232), we get a palindrome (54577545).

The spelling of 23207313 in words is "twenty-three million, two hundred seven thousand, three hundred thirteen".

Divisors: 1 3 31 93 249541 748623 7735771 23207313