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231253 = 1121023
BaseRepresentation
bin111000011101010101
3102202012221
4320131111
524400003
64542341
71652131
oct703525
9382187
10231253
11148820
12b19b1
1381349
14603c1
15487bd
hex38755

231253 has 4 divisors (see below), whose sum is σ = 252288. Its totient is φ = 210220.

The previous prime is 231241. The next prime is 231269. The reversal of 231253 is 352132.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 231253 - 213 = 223061 is a prime.

It is a Duffinian number.

231253 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231223) 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, 10501 + ... + 10522.

It is an arithmetic number, because the mean of its divisors is an integer number (63072).

2231253 is an apocalyptic number.

It is an amenable number.

231253 is a deficient number, since it is larger than the sum of its proper divisors (21035).

231253 is a wasteful number, since it uses less digits than its factorization.

231253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21034.

The product of its digits is 180, while the sum is 16.

The square root of 231253 is about 480.8877207831. The cubic root of 231253 is about 61.3803167357.

Adding to 231253 its reverse (352132), we get a palindrome (583385).

It can be divided in two parts, 231 and 253, that added together give a palindrome (484).

The spelling of 231253 in words is "two hundred thirty-one thousand, two hundred fifty-three".

Divisors: 1 11 21023 231253