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31330025027 = 75189986239
BaseRepresentation
bin11101001011011010…
…100011111001000011
32222212102222011201022
4131023122203321003
51003130441300102
622220503100055
72156246550560
oct351332437103
988772864638
1031330025027
1112317a89574
1260a444162b
132c53ab3562
141732d43867
15c3579a5a2
hex74b6a3e43

31330025027 has 8 divisors (see below), whose sum is σ = 35806848000. Its totient is φ = 26853478344.

The previous prime is 31330025003. The next prime is 31330025029. The reversal of 31330025027 is 72052003313.

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

It is not a de Polignac number, because 31330025027 - 26 = 31330024963 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31330024987 and 31330025005.

It is not an unprimeable number, because it can be changed into a prime (31330025029) 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, 320174 + ... + 406412.

It is an arithmetic number, because the mean of its divisors is an integer number (4475856000).

Almost surely, 231330025027 is an apocalyptic number.

31330025027 is a deficient number, since it is larger than the sum of its proper divisors (4476822973).

31330025027 is an equidigital number, since it uses as much as digits as its factorization.

31330025027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138145.

The product of its (nonzero) digits is 3780, while the sum is 26.

The spelling of 31330025027 in words is "thirty-one billion, three hundred thirty million, twenty-five thousand, twenty-seven".

Divisors: 1 7 51899 86239 363293 603673 4475717861 31330025027