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23193213 = 310772253
BaseRepresentation
bin101100001111…
…0011001111101
31121122100002220
41120132121331
521414140323
62145035553
7401065461
oct130363175
947570086
1023193213
111210144a
127925bb9
134a609c4
14311a4a1
1520820e3
hex161e67d

23193213 has 8 divisors (see below), whose sum is σ = 31213728. Its totient is φ = 15317424.

The previous prime is 23193199. The next prime is 23193227. The reversal of 23193213 is 31239132.

It is an interprime number because it is at equal distance from previous prime (23193199) and next prime (23193227).

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

It is not a de Polignac number, because 23193213 - 210 = 23192189 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23193263) 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, 35806 + ... + 36447.

It is an arithmetic number, because the mean of its divisors is an integer number (3901716).

Almost surely, 223193213 is an apocalyptic number.

It is an amenable number.

23193213 is a deficient number, since it is larger than the sum of its proper divisors (8020515).

23193213 is a wasteful number, since it uses less digits than its factorization.

23193213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72363.

The product of its digits is 972, while the sum is 24.

The square root of 23193213 is about 4815.9332428928. The cubic root of 23193213 is about 285.1808147768.

The spelling of 23193213 in words is "twenty-three million, one hundred ninety-three thousand, two hundred thirteen".

Divisors: 1 3 107 321 72253 216759 7731071 23193213