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31201010023 = 503450713763
BaseRepresentation
bin11101000011101110…
…011010000101100111
32222112110012112101211
4131003232122011213
51002344424310043
622200013532251
72153122131541
oct350356320547
988473175354
1031201010023
111226117a6a7
1260691a4087
132c33151211
14171db5c691
15c292b3a9d
hex743b9a167

31201010023 has 8 divisors (see below), whose sum is σ = 31272248448. Its totient is φ = 31129809144.

The previous prime is 31201010021. The next prime is 31201010053. The reversal of 31201010023 is 32001010213.

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 31201010023 - 21 = 31201010021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31201009985 and 31201010012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31201010021) 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, 2260140 + ... + 2273902.

It is an arithmetic number, because the mean of its divisors is an integer number (3909031056).

Almost surely, 231201010023 is an apocalyptic number.

31201010023 is a deficient number, since it is larger than the sum of its proper divisors (71238425).

31201010023 is a wasteful number, since it uses less digits than its factorization.

31201010023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18773.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 31201010023 its reverse (32001010213), we get a palindrome (63202020236).

The spelling of 31201010023 in words is "thirty-one billion, two hundred one million, ten thousand, twenty-three".

Divisors: 1 503 4507 13763 2267021 6922789 62029841 31201010023