Search a number
-
+
231127073 = 389594157
BaseRepresentation
bin11011100011010…
…11100000100001
3121002220110201222
431301223200201
5433132031243
634533504425
75504355602
oct1561534041
9532813658
10231127073
11109513211
12654a2115
1338b652a8
14229a5da9
1515457168
hexdc6b821

231127073 has 4 divisors (see below), whose sum is σ = 231721620. Its totient is φ = 230532528.

The previous prime is 231127063. The next prime is 231127133. The reversal of 231127073 is 370721132.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 95101504 + 136025569 = 9752^2 + 11663^2 .

It is a cyclic number.

It is not a de Polignac number, because 231127073 - 28 = 231126817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231127063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 296690 + ... + 297467.

It is an arithmetic number, because the mean of its divisors is an integer number (57930405).

Almost surely, 2231127073 is an apocalyptic number.

It is an amenable number.

231127073 is a deficient number, since it is larger than the sum of its proper divisors (594547).

231127073 is an equidigital number, since it uses as much as digits as its factorization.

231127073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 594546.

The product of its (nonzero) digits is 1764, while the sum is 26.

The square root of 231127073 is about 15202.8639736071. The cubic root of 231127073 is about 613.6917332341.

The spelling of 231127073 in words is "two hundred thirty-one million, one hundred twenty-seven thousand, seventy-three".

Divisors: 1 389 594157 231127073