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31232223001 = 74794930769
BaseRepresentation
bin11101000101100101…
…011110011100011001
32222121121221022120001
4131011211132130121
51002430422114001
622203050533001
72153651341510
oct350545363431
988547838501
1031232223001
1112277859451
126077737161
132c3975c335
141723d65677
15c2bdcc001
hex74595e719

31232223001 has 8 divisors (see below), whose sum is σ = 36453415680. Its totient is φ = 26200891968.

The previous prime is 31232222993. The next prime is 31232223019. The reversal of 31232223001 is 10032223213.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31232223001 - 23 = 31232222993 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31232223001.

It is not an unprimeable number, because it can be changed into a prime (31232223091) 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 7 ways as a sum of consecutive naturals, for example, 47465056 + ... + 47465713.

It is an arithmetic number, because the mean of its divisors is an integer number (4556676960).

Almost surely, 231232223001 is an apocalyptic number.

It is an amenable number.

31232223001 is a deficient number, since it is larger than the sum of its proper divisors (5221192679).

31232223001 is an equidigital number, since it uses as much as digits as its factorization.

31232223001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94930823.

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

Adding to 31232223001 its reverse (10032223213), we get a palindrome (41264446214).

The spelling of 31232223001 in words is "thirty-one billion, two hundred thirty-two million, two hundred twenty-three thousand, one".

Divisors: 1 7 47 329 94930769 664515383 4461746143 31232223001