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248330231 = 1092278259
BaseRepresentation
bin11101100110100…
…11011111110111
3122022021111000222
432303103133313
51002033031411
640350324555
76103525562
oct1663233767
9568244028
10248330231
111181a31a6
126b1b975b
133c5a9686
1424da34d9
1516c044db
hexecd37f7

248330231 has 4 divisors (see below), whose sum is σ = 250608600. Its totient is φ = 246051864.

The previous prime is 248330227. The next prime is 248330261. The reversal of 248330231 is 132033842.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 132033842 = 266016921.

It is a cyclic number.

It is not a de Polignac number, because 248330231 - 22 = 248330227 is a prime.

It is a super-2 number, since 2×2483302312 = 123335807257026722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 248330231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (248330261) 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, 1139021 + ... + 1139238.

It is an arithmetic number, because the mean of its divisors is an integer number (62652150).

Almost surely, 2248330231 is an apocalyptic number.

248330231 is a deficient number, since it is larger than the sum of its proper divisors (2278369).

248330231 is a wasteful number, since it uses less digits than its factorization.

248330231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2278368.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 248330231 is about 15758.4971047369. The cubic root of 248330231 is about 628.5548727266.

The spelling of 248330231 in words is "two hundred forty-eight million, three hundred thirty thousand, two hundred thirty-one".

Divisors: 1 109 2278259 248330231