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30164431 = 1123119227
BaseRepresentation
bin111001100010…
…0010111001111
32002202111211011
41303010113033
530210230211
62554310051
7514251643
oct163042717
962674734
1030164431
1116032a90
12a128327
136331a9b
144012c23
1529ac921
hex1cc45cf

30164431 has 8 divisors (see below), whose sum is σ = 34337664. Its totient is φ = 26229720.

The previous prime is 30164417. The next prime is 30164447. The reversal of 30164431 is 13446103.

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

It is not a de Polignac number, because 30164431 - 217 = 30033359 is a prime.

It is a super-2 number, since 2×301644312 = 1819785795107522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30164401) 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, 59361 + ... + 59866.

It is an arithmetic number, because the mean of its divisors is an integer number (4292208).

Almost surely, 230164431 is an apocalyptic number.

30164431 is a deficient number, since it is larger than the sum of its proper divisors (4173233).

30164431 is a wasteful number, since it uses less digits than its factorization.

30164431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119261.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 30164431 is about 5492.2154910382. The cubic root of 30164431 is about 311.2899113887.

It can be divided in two parts, 3016 and 4431, that added together give a palindrome (7447).

The spelling of 30164431 in words is "thirty million, one hundred sixty-four thousand, four hundred thirty-one".

Divisors: 1 11 23 253 119227 1311497 2742221 30164431