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30131202 = 2316330809
BaseRepresentation
bin111001011110…
…0010000000010
32002200211020110
41302330100002
530203144302
62553452150
7514053033
oct162742002
962624213
1030131202
1116010022
12a111056
13631c91a
144004a8a
1529a2b6c
hex1cbc402

30131202 has 16 divisors (see below), whose sum is σ = 60634080. Its totient is φ = 9981792.

The previous prime is 30131201. The next prime is 30131243. The reversal of 30131202 is 20213103.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (30131201) 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, 14427 + ... + 16382.

It is an arithmetic number, because the mean of its divisors is an integer number (3789630).

Almost surely, 230131202 is an apocalyptic number.

30131202 is an abundant number, since it is smaller than the sum of its proper divisors (30502878).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30131202 is a wasteful number, since it uses less digits than its factorization.

30131202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30977.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 30131202 is about 5489.1895576670. The cubic root of 30131202 is about 311.1755642068.

Adding to 30131202 its reverse (20213103), we get a palindrome (50344305).

The spelling of 30131202 in words is "thirty million, one hundred thirty-one thousand, two hundred two".

Divisors: 1 2 3 6 163 326 489 978 30809 61618 92427 184854 5021867 10043734 15065601 30131202