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23032213 = 79291547
BaseRepresentation
bin101011111011…
…1000110010101
31121100011020221
41113313012111
521344012323
62141354341
7366525211
oct127670625
947304227
1023032213
1112001496
1278689b1
134a05639
1430b7941
15204e55d
hex15f7195

23032213 has 4 divisors (see below), whose sum is σ = 23323840. Its totient is φ = 22740588.

The previous prime is 23032211. The next prime is 23032231. The reversal of 23032213 is 31223032.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 23032213 - 21 = 23032211 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 (23032211) 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, 145695 + ... + 145852.

It is an arithmetic number, because the mean of its divisors is an integer number (5830960).

Almost surely, 223032213 is an apocalyptic number.

It is an amenable number.

23032213 is a deficient number, since it is larger than the sum of its proper divisors (291627).

23032213 is an equidigital number, since it uses as much as digits as its factorization.

23032213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291626.

The product of its (nonzero) digits is 216, while the sum is 16.

The square root of 23032213 is about 4799.1887856178. The cubic root of 23032213 is about 284.5194034227.

Adding to 23032213 its reverse (31223032), we get a palindrome (54255245).

The spelling of 23032213 in words is "twenty-three million, thirty-two thousand, two hundred thirteen".

Divisors: 1 79 291547 23032213