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31233030023 = 139221260551
BaseRepresentation
bin11101000101101000…
…100011011110000111
32222121200110022120202
4131011220203132013
51002431123430043
622203120121115
72153661242366
oct350550433607
988550408522
1031233030023
111227825a808
126077a6619b
132c39982770
1417240d57dd
15c2bedb1b8
hex745a23787

31233030023 has 8 divisors (see below), whose sum is σ = 33639347616. Its totient is φ = 28827252000.

The previous prime is 31233029981. The next prime is 31233030043. The reversal of 31233030023 is 32003033213.

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 31233030023 - 26 = 31233029959 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31233029977 and 31233030004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31233030043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10403 + ... + 250148.

It is an arithmetic number, because the mean of its divisors is an integer number (4204918452).

Almost surely, 231233030023 is an apocalyptic number.

31233030023 is a deficient number, since it is larger than the sum of its proper divisors (2406317593).

31233030023 is a wasteful number, since it uses less digits than its factorization.

31233030023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269785.

The product of its (nonzero) digits is 972, while the sum is 20.

Adding to 31233030023 its reverse (32003033213), we get a palindrome (63236063236).

The spelling of 31233030023 in words is "thirty-one billion, two hundred thirty-three million, thirty thousand, twenty-three".

Divisors: 1 13 9221 119873 260551 3387163 2402540771 31233030023