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23213137 = 295913567
BaseRepresentation
bin101100010001…
…1010001010001
31121200100102211
41120203101101
521420310022
62145312121
7401210533
oct130432121
947610384
1023213137
1112115412
127935641
134a69aac
143123853
152087e77
hex1623451

23213137 has 8 divisors (see below), whose sum is σ = 24422400. Its totient is φ = 22031184.

The previous prime is 23213131. The next prime is 23213147. The reversal of 23213137 is 73131232.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2k-23213137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23213131) 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, 5073 + ... + 8494.

It is an arithmetic number, because the mean of its divisors is an integer number (3052800).

Almost surely, 223213137 is an apocalyptic number.

It is an amenable number.

23213137 is a deficient number, since it is larger than the sum of its proper divisors (1209263).

23213137 is a wasteful number, since it uses less digits than its factorization.

23213137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13655.

The product of its digits is 756, while the sum is 22.

The square root of 23213137 is about 4818.0013491073. The cubic root of 23213137 is about 285.2624523995.

Adding to 23213137 its reverse (73131232), we get a palindrome (96344369).

The spelling of 23213137 in words is "twenty-three million, two hundred thirteen thousand, one hundred thirty-seven".

Divisors: 1 29 59 1711 13567 393443 800453 23213137