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231302230141 = 1488531553897
BaseRepresentation
bin1101011101101010101…
…1111111000001111101
3211010000211221201210111
43113122223333001331
512242201332331031
6254131521310021
722465612342123
oct3273253770175
9733024851714
10231302230141
118a105095a94
12389b2795311
1318a72420348
14b2a346b913
15603b57e1b1
hex35daaff07d

231302230141 has 4 divisors (see below), whose sum is σ = 231303932892. Its totient is φ = 231300527392.

The previous prime is 231302230127. The next prime is 231302230147. The reversal of 231302230141 is 141032203132.

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 144058202500 + 87244027641 = 379550^2 + 295371^2 .

It is a cyclic number.

It is not a de Polignac number, because 231302230141 - 29 = 231302229629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231302230147) 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, 628096 + ... + 925801.

It is an arithmetic number, because the mean of its divisors is an integer number (57825983223).

Almost surely, 2231302230141 is an apocalyptic number.

It is an amenable number.

231302230141 is a deficient number, since it is larger than the sum of its proper divisors (1702751).

231302230141 is a wasteful number, since it uses less digits than its factorization.

231302230141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1702750.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 231302230141 its reverse (141032203132), we get a palindrome (372334433273).

The spelling of 231302230141 in words is "two hundred thirty-one billion, three hundred two million, two hundred thirty thousand, one hundred forty-one".

Divisors: 1 148853 1553897 231302230141