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231144053 = 7171942387
BaseRepresentation
bin11011100011011…
…11101001110101
3121002221100000212
431301233221311
5433133102203
634534115205
75504456240
oct1561575165
9532840025
10231144053
11109524a48
12654abb05
1338b6cc3a
14229ac257
151545c1d8
hexdc6fa75

231144053 has 8 divisors (see below), whose sum is σ = 279703872. Its totient is φ = 186469056.

The previous prime is 231144031. The next prime is 231144079. The reversal of 231144053 is 350441132.

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

It is not a de Polignac number, because 231144053 - 212 = 231139957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231144853) 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, 971075 + ... + 971312.

It is an arithmetic number, because the mean of its divisors is an integer number (34962984).

Almost surely, 2231144053 is an apocalyptic number.

It is an amenable number.

231144053 is a deficient number, since it is larger than the sum of its proper divisors (48559819).

231144053 is a wasteful number, since it uses less digits than its factorization.

231144053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1942411.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 231144053 is about 15203.4224107600. The cubic root of 231144053 is about 613.7067613747.

Adding to 231144053 its reverse (350441132), we get a palindrome (581585185).

It can be divided in two parts, 2311 and 44053, that added together give a palindrome (46364).

The spelling of 231144053 in words is "two hundred thirty-one million, one hundred forty-four thousand, fifty-three".

Divisors: 1 7 17 119 1942387 13596709 33020579 231144053