Search a number
-
+
312121230301 = 53167285712343
BaseRepresentation
bin1001000101010111110…
…00000000001111011101
31002211122021011022210201
410202223320000033131
520103211013332201
6355215253103501
731356440453236
oct4425370001735
91084567138721
10312121230301
11110408330001
12505a8927b91
132358212b32a
141116ccba08d
1581bb8c9801
hex48abe003dd

312121230301 has 16 divisors (see below), whose sum is σ = 320052466944. Its totient is φ = 304267227264.

The previous prime is 312121230283. The next prime is 312121230313. The reversal of 312121230301 is 103032121213.

It is a cyclic number.

It is not a de Polignac number, because 312121230301 - 25 = 312121230269 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 (312121230331) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25281136 + ... + 25293478.

It is an arithmetic number, because the mean of its divisors is an integer number (20003279184).

Almost surely, 2312121230301 is an apocalyptic number.

It is an amenable number.

312121230301 is a deficient number, since it is larger than the sum of its proper divisors (7931236643).

312121230301 is a wasteful number, since it uses less digits than its factorization.

312121230301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15420.

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

Adding to 312121230301 its reverse (103032121213), we get a palindrome (415153351514).

It can be divided in two parts, 3121212 and 30301, that added together give a palindrome (3151513).

The spelling of 312121230301 in words is "three hundred twelve billion, one hundred twenty-one million, two hundred thirty thousand, three hundred one".

Divisors: 1 53 167 2857 8851 12343 151421 477119 654179 2061281 25287307 35263951 109247893 1868989403 5889079817 312121230301