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30231130 = 253023113
BaseRepresentation
bin111001101010…
…0101001011010
32002212220022111
41303110221122
530214344010
62555542534
7514650256
oct163245132
962786274
1030231130
1116079106
12a15aa4a
136356257
14402d266
1529c258a
hex1cd4a5a

30231130 has 8 divisors (see below), whose sum is σ = 54416052. Its totient is φ = 12092448.

The previous prime is 30231101. The next prime is 30231133. The reversal of 30231130 is 3113203.

It can be written as a sum of positive squares in 2 ways, for example, as 30173049 + 58081 = 5493^2 + 241^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 30231130.

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 3 ways as a sum of consecutive naturals, for example, 1511547 + ... + 1511566.

Almost surely, 230231130 is an apocalyptic number.

30231130 is a deficient number, since it is larger than the sum of its proper divisors (24184922).

30231130 is a wasteful number, since it uses less digits than its factorization.

30231130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3023120.

The product of its (nonzero) digits is 54, while the sum is 13.

The square root of 30231130 is about 5498.2842778452. The cubic root of 30231130 is about 311.5191818739.

Adding to 30231130 its reverse (3113203), we get a palindrome (33344333).

The spelling of 30231130 in words is "thirty million, two hundred thirty-one thousand, one hundred thirty".

Divisors: 1 2 5 10 3023113 6046226 15115565 30231130