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23231223001 = 73318746143
BaseRepresentation
bin10101101000101100…
…000101010011011001
32012222000122101220201
4111220230011103121
5340034143114001
614401113422201
71451456065060
oct255054052331
965860571821
1023231223001
119941468758
12460410a961
132262c58ccc
1411a54bb1d7
1590e785501
hex568b054d9

23231223001 has 4 divisors (see below), whose sum is σ = 26549969152. Its totient is φ = 19912476852.

The previous prime is 23231222977. The next prime is 23231223007. The reversal of 23231223001 is 10032213232.

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 23231223001 - 29 = 23231222489 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23231223001.

It is not an unprimeable number, because it can be changed into a prime (23231223007) 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, 1659373065 + ... + 1659373078.

It is an arithmetic number, because the mean of its divisors is an integer number (6637492288).

Almost surely, 223231223001 is an apocalyptic number.

It is an amenable number.

23231223001 is a deficient number, since it is larger than the sum of its proper divisors (3318746151).

23231223001 is an equidigital number, since it uses as much as digits as its factorization.

23231223001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3318746150.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 23231223001 its reverse (10032213232), we get a palindrome (33263436233).

The spelling of 23231223001 in words is "twenty-three billion, two hundred thirty-one million, two hundred twenty-three thousand, one".

Divisors: 1 7 3318746143 23231223001