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30231132 = 22313119231
BaseRepresentation
bin111001101010…
…0101001011100
32002212220022120
41303110221130
530214344012
62555542540
7514650261
oct163245134
962786276
1030231132
1116079108
12a15aa50
136356259
14402d268
1529c258c
hex1cd4a5c

30231132 has 24 divisors (see below), whose sum is σ = 71081472. Its totient is φ = 9999600.

The previous prime is 30231101. The next prime is 30231133. The reversal of 30231132 is 23113203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30231133) 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, 8044 + ... + 11187.

It is an arithmetic number, because the mean of its divisors is an integer number (2961728).

Almost surely, 230231132 is an apocalyptic number.

It is an amenable number.

30231132 is an abundant number, since it is smaller than the sum of its proper divisors (40850340).

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

30231132 is a wasteful number, since it uses less digits than its factorization.

30231132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19369 (or 19367 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 30231132 is about 5498.2844597201. The cubic root of 30231132 is about 311.5191887436.

Adding to 30231132 its reverse (23113203), we get a palindrome (53344335).

The spelling of 30231132 in words is "thirty million, two hundred thirty-one thousand, one hundred thirty-two".

Divisors: 1 2 3 4 6 12 131 262 393 524 786 1572 19231 38462 57693 76924 115386 230772 2519261 5038522 7557783 10077044 15115566 30231132