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30131412 = 22317147703
BaseRepresentation
bin111001011110…
…0010011010100
32002200211112020
41302330103110
530203201122
62553453140
7514053453
oct162742324
962624466
1030131412
11160101a3
12a1111b0
13631ca4c
144004b9a
1529a2c5c
hex1cbc4d4

30131412 has 24 divisors (see below), whose sum is σ = 74442816. Its totient is φ = 9452928.

The previous prime is 30131389. The next prime is 30131419. The reversal of 30131412 is 21413103.

It is a super-2 number, since 2×301314122 = 1815803978227488, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 30131391 and 30131400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30131419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73648 + ... + 74055.

It is an arithmetic number, because the mean of its divisors is an integer number (3101784).

Almost surely, 230131412 is an apocalyptic number.

It is an amenable number.

30131412 is an abundant number, since it is smaller than the sum of its proper divisors (44311404).

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

30131412 is a wasteful number, since it uses less digits than its factorization.

30131412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147727 (or 147725 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 30131412 is about 5489.2086861405. The cubic root of 30131412 is about 311.1762871198.

Adding to 30131412 its reverse (21413103), we get a palindrome (51544515).

It can be divided in two parts, 301 and 31412, that added together give a palindrome (31713).

The spelling of 30131412 in words is "thirty million, one hundred thirty-one thousand, four hundred twelve".

Divisors: 1 2 3 4 6 12 17 34 51 68 102 204 147703 295406 443109 590812 886218 1772436 2510951 5021902 7532853 10043804 15065706 30131412