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22323013 = 163136951
BaseRepresentation
bin101010100100…
…1111101000101
31120000010102021
41111021331011
521203314023
62114243141
7360512446
oct125117505
946003367
1022323013
1111667679
1275864b1
1348178ab
142d712cd
151e5e35d
hex1549f45

22323013 has 4 divisors (see below), whose sum is σ = 22460128. Its totient is φ = 22185900.

The previous prime is 22323001. The next prime is 22323019. The reversal of 22323013 is 31032322.

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, and also an emirpimes, since its reverse is a distinct semiprime: 31032322 = 215516161.

It is a cyclic number.

It is not a de Polignac number, because 22323013 - 25 = 22322981 is a prime.

It is a super-3 number, since 3×223230133 (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22323019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68313 + ... + 68638.

It is an arithmetic number, because the mean of its divisors is an integer number (5615032).

Almost surely, 222323013 is an apocalyptic number.

It is an amenable number.

22323013 is a deficient number, since it is larger than the sum of its proper divisors (137115).

22323013 is a wasteful number, since it uses less digits than its factorization.

22323013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137114.

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

The square root of 22323013 is about 4724.7235897987. The cubic root of 22323013 is about 281.5686319347.

Adding to 22323013 its reverse (31032322), we get a palindrome (53355335).

The spelling of 22323013 in words is "twenty-two million, three hundred twenty-three thousand, thirteen".

Divisors: 1 163 136951 22323013