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31232330223 = 3234310526569
BaseRepresentation
bin11101000101100101…
…111000100111101111
32222121122010202122020
4131011211320213233
51002430434031343
622203053121223
72153652266223
oct350545704757
988548122566
1031232330223
1112277921a66
126077789213
132c39799093
141723d92783
15c2bdedb83
hex7459789ef

31232330223 has 16 divisors (see below), whose sum is σ = 44464231680. Its totient is φ = 19453097664.

The previous prime is 31232330209. The next prime is 31232330231. The reversal of 31232330223 is 32203323213.

It is not a de Polignac number, because 31232330223 - 28 = 31232329967 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31232330193 and 31232330202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31232330243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5260318 + ... + 5266251.

It is an arithmetic number, because the mean of its divisors is an integer number (2779014480).

Almost surely, 231232330223 is an apocalyptic number.

31232330223 is a deficient number, since it is larger than the sum of its proper divisors (13231901457).

31232330223 is a wasteful number, since it uses less digits than its factorization.

31232330223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10526638.

The product of its (nonzero) digits is 3888, while the sum is 24.

Adding to 31232330223 its reverse (32203323213), we get a palindrome (63435653436).

The spelling of 31232330223 in words is "thirty-one billion, two hundred thirty-two million, three hundred thirty thousand, two hundred twenty-three".

Divisors: 1 3 23 43 69 129 989 2967 10526569 31579707 242111087 452642467 726333261 1357927401 10410776741 31232330223