Search a number
-
+
231777041 = 491472051
BaseRepresentation
bin11011101000010…
…10001100010001
3121011010111022212
431310022030101
5433313331131
634555441505
75513033546
oct1564121421
9534114285
10231777041
11109917581
1265756295
13390320a2
1422ad4bcd
1515534a2b
hexdd0a311

231777041 has 4 divisors (see below), whose sum is σ = 232249584. Its totient is φ = 231304500.

The previous prime is 231777037. The next prime is 231777097. The reversal of 231777041 is 140777132.

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 231777041 - 22 = 231777037 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231776989 and 231777007.

It is not an unprimeable number, because it can be changed into a prime (231777241) 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, 235535 + ... + 236516.

It is an arithmetic number, because the mean of its divisors is an integer number (58062396).

Almost surely, 2231777041 is an apocalyptic number.

It is an amenable number.

231777041 is a deficient number, since it is larger than the sum of its proper divisors (472543).

231777041 is an equidigital number, since it uses as much as digits as its factorization.

231777041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 472542.

The product of its (nonzero) digits is 8232, while the sum is 32.

The square root of 231777041 is about 15224.2254646993. The cubic root of 231777041 is about 614.2664627694.

Subtracting from 231777041 its reverse (140777132), we obtain a palindrome (90999909).

The spelling of 231777041 in words is "two hundred thirty-one million, seven hundred seventy-seven thousand, forty-one".

Divisors: 1 491 472051 231777041