Search a number
-
+
12102141431 = 54722124573
BaseRepresentation
bin10110100010101100…
…00000010111110111
31011020102022111001102
423101112000113313
5144241122011211
65320514520315
7605621335112
oct132126002767
934212274042
1012102141431
115150385a86
122418b9609b
1311ab377c43
1482b409579
154ac6e9a3b
hex2d15805f7

12102141431 has 4 divisors (see below), whose sum is σ = 12124266552. Its totient is φ = 12080016312.

The previous prime is 12102141397. The next prime is 12102141433. The reversal of 12102141431 is 13414120121.

12102141431 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 is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-12102141431 is a prime.

It is a super-2 number, since 2×121021414312 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12102141433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11061740 + ... + 11062833.

It is an arithmetic number, because the mean of its divisors is an integer number (3031066638).

Almost surely, 212102141431 is an apocalyptic number.

12102141431 is a deficient number, since it is larger than the sum of its proper divisors (22125121).

12102141431 is an equidigital number, since it uses as much as digits as its factorization.

12102141431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22125120.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 12102141431 its reverse (13414120121), we get a palindrome (25516261552).

The spelling of 12102141431 in words is "twelve billion, one hundred two million, one hundred forty-one thousand, four hundred thirty-one".

Divisors: 1 547 22124573 12102141431