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275231 = 11131191
BaseRepresentation
bin1000011001100011111
3111222112202
41003030133
532301411
65522115
72224265
oct1031437
9458482
10275231
11178870
1211333b
1398378
1472435
155683b
hex4331f

275231 has 8 divisors (see below), whose sum is σ = 304128. Its totient is φ = 247000.

The previous prime is 275227. The next prime is 275251. The reversal of 275231 is 132572.

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

It is a cyclic number.

It is not a de Polignac number, because 275231 - 22 = 275227 is a prime.

It is a super-2 number, since 2×2752312 = 151504206722, which contains 22 as substring.

It is a plaindrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (275201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1346 + ... + 1536.

It is an arithmetic number, because the mean of its divisors is an integer number (38016).

2275231 is an apocalyptic number.

275231 is a deficient number, since it is larger than the sum of its proper divisors (28897).

275231 is a wasteful number, since it uses less digits than its factorization.

275231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333.

The product of its digits is 420, while the sum is 20.

The square root of 275231 is about 524.6246277101. The cubic root of 275231 is about 65.0477755269.

The spelling of 275231 in words is "two hundred seventy-five thousand, two hundred thirty-one".

Divisors: 1 11 131 191 1441 2101 25021 275231