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231323030 = 2523132303
BaseRepresentation
bin11011100100110…
…11010110010110
3121010021102112122
431302123112112
5433204314110
634542015542
75506133111
oct1562332626
9533242478
10231323030
11109637464
12655775b2
1338c03543
1422a17578
1515495255
hexdc9b596

231323030 has 8 divisors (see below), whose sum is σ = 416381472. Its totient is φ = 92529208.

The previous prime is 231323021. The next prime is 231323069. The reversal of 231323030 is 30323132.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11566142 + ... + 11566161.

It is an arithmetic number, because the mean of its divisors is an integer number (52047684).

Almost surely, 2231323030 is an apocalyptic number.

231323030 is a deficient number, since it is larger than the sum of its proper divisors (185058442).

231323030 is a wasteful number, since it uses less digits than its factorization.

231323030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23132310.

The product of its (nonzero) digits is 324, while the sum is 17.

The square root of 231323030 is about 15209.3073478052. The cubic root of 231323030 is about 613.8651201354.

Adding to 231323030 its reverse (30323132), we get a palindrome (261646162).

It can be divided in two parts, 23132 and 3030, that added together give a palindrome (26162).

The spelling of 231323030 in words is "two hundred thirty-one million, three hundred twenty-three thousand, thirty".

Divisors: 1 2 5 10 23132303 46264606 115661515 231323030