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30330231 = 310992753
BaseRepresentation
bin111001110110…
…0110101110111
32010001221020220
41303230311313
530231031411
63002025423
7515542221
oct163546567
963057226
1030330231
1116136608
12a1a8273
13638c3a9
144057411
1529e1b06
hex1cecd77

30330231 has 8 divisors (see below), whose sum is σ = 40811760. Its totient is φ = 20034432.

The previous prime is 30330211. The next prime is 30330239. The reversal of 30330231 is 13203303.

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

It is not a de Polignac number, because 30330231 - 214 = 30313847 is a prime.

It is a super-2 number, since 2×303302312 = 1839845825026722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 30330231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30330239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46050 + ... + 46703.

It is an arithmetic number, because the mean of its divisors is an integer number (5101470).

Almost surely, 230330231 is an apocalyptic number.

30330231 is a deficient number, since it is larger than the sum of its proper divisors (10481529).

30330231 is a wasteful number, since it uses less digits than its factorization.

30330231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92865.

The product of its (nonzero) digits is 162, while the sum is 15.

The square root of 30330231 is about 5507.2888974522. The cubic root of 30330231 is about 311.8592087485.

Adding to 30330231 its reverse (13203303), we get a palindrome (43533534).

The spelling of 30330231 in words is "thirty million, three hundred thirty thousand, two hundred thirty-one".

Divisors: 1 3 109 327 92753 278259 10110077 30330231