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23223154631 = 47494109673
BaseRepresentation
bin10101101000001101…
…010011011111000111
32012221110110111012012
4111220031103133013
5340030111422011
614400224444435
71451330362115
oct255015233707
965843414165
1023223154631
119937957886
12460147971b
132261392721
1411a43baab5
1590dbdea8b
hex5683537c7

23223154631 has 4 divisors (see below), whose sum is σ = 23717264352. Its totient is φ = 22729044912.

The previous prime is 23223154621. The next prime is 23223154649. The reversal of 23223154631 is 13645132232.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 23223154631 - 214 = 23223138247 is a prime.

It is a super-2 number, since 2×232231546312 (a number of 22 digits) contains 22 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 (23223154601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 247054790 + ... + 247054883.

It is an arithmetic number, because the mean of its divisors is an integer number (5929316088).

Almost surely, 223223154631 is an apocalyptic number.

23223154631 is a deficient number, since it is larger than the sum of its proper divisors (494109721).

23223154631 is an equidigital number, since it uses as much as digits as its factorization.

23223154631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494109720.

The product of its digits is 25920, while the sum is 32.

Adding to 23223154631 its reverse (13645132232), we get a palindrome (36868286863).

The spelling of 23223154631 in words is "twenty-three billion, two hundred twenty-three million, one hundred fifty-four thousand, six hundred thirty-one".

Divisors: 1 47 494109673 23223154631