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30381499171 = 1311491556509
BaseRepresentation
bin11100010010111000…
…001110001100100011
32220102100011001212001
4130102320032030203
5444210130433141
621542420544431
72123611324222
oct342270161443
986370131761
1030381499171
1111980623001
125a7a852117
132b3242975a
141682d94cb9
15bcc385a31
hex712e0e323

30381499171 has 8 divisors (see below), whose sum is σ = 30818898000. Its totient is φ = 29947213920.

The previous prime is 30381499147. The next prime is 30381499201. The reversal of 30381499171 is 17199418303.

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 30381499171 - 25 = 30381499139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30381499121) 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, 758736 + ... + 797773.

It is an arithmetic number, because the mean of its divisors is an integer number (3852362250).

Almost surely, 230381499171 is an apocalyptic number.

30381499171 is a deficient number, since it is larger than the sum of its proper divisors (437398829).

30381499171 is a wasteful number, since it uses less digits than its factorization.

30381499171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1556789.

The product of its (nonzero) digits is 163296, while the sum is 46.

The spelling of 30381499171 in words is "thirty billion, three hundred eighty-one million, four hundred ninety-nine thousand, one hundred seventy-one".

Divisors: 1 131 149 19519 1556509 203902679 231919841 30381499171