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1230133141 = 1772360773
BaseRepresentation
bin100100101010010…
…0101011110010101
310011201201020102201
41021110211132111
510004403230031
6322022004501
742324646666
oct11124453625
93151636381
101230133141
11581418266
122a3b76731
13167b14c43
14b953536d
1572eddd61
hex49525795

1230133141 has 4 divisors (see below), whose sum is σ = 1302493932. Its totient is φ = 1157772352.

The previous prime is 1230133139. The next prime is 1230133159. The reversal of 1230133141 is 1413310321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1413310321 = 1519359671.

It can be written as a sum of positive squares in 2 ways, for example, as 866124900 + 364008241 = 29430^2 + 19079^2 .

It is not a de Polignac number, because 1230133141 - 21 = 1230133139 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 (1230133241) 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, 36180370 + ... + 36180403.

It is an arithmetic number, because the mean of its divisors is an integer number (325623483).

Almost surely, 21230133141 is an apocalyptic number.

It is an amenable number.

1230133141 is a deficient number, since it is larger than the sum of its proper divisors (72360791).

1230133141 is an equidigital number, since it uses as much as digits as its factorization.

1230133141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72360790.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 1230133141 is about 35073.2539266034. The cubic root of 1230133141 is about 1071.4799275811.

Adding to 1230133141 its reverse (1413310321), we get a palindrome (2643443462).

The spelling of 1230133141 in words is "one billion, two hundred thirty million, one hundred thirty-three thousand, one hundred forty-one".

Divisors: 1 17 72360773 1230133141