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231153344201 = 1317781026477
BaseRepresentation
bin1101011101000111010…
…0000001111011001001
3211002122110210112200102
43113101310001323021
512241400224003301
6254105042215145
722462124002253
oct3272164017311
9732573715612
10231153344201
118a03904485a
12389709544b5
1318a4a621560
14b28b792cd3
15602d46eb6b
hex35d1d01ec9

231153344201 has 4 divisors (see below), whose sum is σ = 248934370692. Its totient is φ = 213372317712.

The previous prime is 231153344189. The next prime is 231153344239. The reversal of 231153344201 is 102443351132.

231153344201 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 19232142400 + 211921201801 = 138680^2 + 460349^2 .

It is a cyclic number.

It is not a de Polignac number, because 231153344201 - 26 = 231153344137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231153374201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8890513226 + ... + 8890513251.

It is an arithmetic number, because the mean of its divisors is an integer number (62233592673).

Almost surely, 2231153344201 is an apocalyptic number.

It is an amenable number.

231153344201 is a deficient number, since it is larger than the sum of its proper divisors (17781026491).

231153344201 is a wasteful number, since it uses less digits than its factorization.

231153344201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17781026490.

The product of its (nonzero) digits is 8640, while the sum is 29.

Adding to 231153344201 its reverse (102443351132), we get a palindrome (333596695333).

The spelling of 231153344201 in words is "two hundred thirty-one billion, one hundred fifty-three million, three hundred forty-four thousand, two hundred one".

Divisors: 1 13 17781026477 231153344201