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30344231 = 59514309
BaseRepresentation
bin111001111000…
…0010000100111
32010002122110102
41303300100213
530232003411
63002214315
7515631101
oct163602047
963078412
1030344231
1116146085
12a1b439b
136395888
14405c571
1529e5d3b
hex1cf0427

30344231 has 4 divisors (see below), whose sum is σ = 30858600. Its totient is φ = 29829864.

The previous prime is 30344221. The next prime is 30344239. The reversal of 30344231 is 13244303.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13244303 = 33140013.

It is a cyclic number.

It is not a de Polignac number, because 30344231 - 210 = 30343207 is a prime.

It is a super-2 number, since 2×303442312 = 1841544709962722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30344239) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 257096 + ... + 257213.

It is an arithmetic number, because the mean of its divisors is an integer number (7714650).

Almost surely, 230344231 is an apocalyptic number.

30344231 is a deficient number, since it is larger than the sum of its proper divisors (514369).

30344231 is an equidigital number, since it uses as much as digits as its factorization.

30344231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 514368.

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 30344231 is about 5508.5597936303. The cubic root of 30344231 is about 311.9071846149.

Adding to 30344231 its reverse (13244303), we get a palindrome (43588534).

The spelling of 30344231 in words is "thirty million, three hundred forty-four thousand, two hundred thirty-one".

Divisors: 1 59 514309 30344231