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23032013 = 44351991
BaseRepresentation
bin101011111011…
…1000011001101
31121100010222112
41113313003031
521344011023
62141353405
7366524504
oct127670315
947303875
1023032013
1112001324
127868865
134a05514
1430b783b
15204e478
hex15f70cd

23032013 has 4 divisors (see below), whose sum is σ = 23084448. Its totient is φ = 22979580.

The previous prime is 23032001. The next prime is 23032067. The reversal of 23032013 is 31023032.

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 23032013 - 26 = 23031949 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 (23002013) 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, 25553 + ... + 26438.

It is an arithmetic number, because the mean of its divisors is an integer number (5771112).

Almost surely, 223032013 is an apocalyptic number.

It is an amenable number.

23032013 is a deficient number, since it is larger than the sum of its proper divisors (52435).

23032013 is an equidigital number, since it uses as much as digits as its factorization.

23032013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52434.

The product of its (nonzero) digits is 108, while the sum is 14.

The square root of 23032013 is about 4799.1679487178. The cubic root of 23032013 is about 284.5185798798.

Adding to 23032013 its reverse (31023032), we get a palindrome (54055045).

The spelling of 23032013 in words is "twenty-three million, thirty-two thousand, thirteen".

Divisors: 1 443 51991 23032013