Search a number
-
+
31213032010001 = 671549730061699
BaseRepresentation
bin1110001100011010110011…
…01011110111000100010001
311002111221021212102120101122
413012031121223313010101
513042343242143310001
6150215022521012025
76401032013346422
oct706153153670421
9132457255376348
1031213032010001
119a44410936146
123601365324015
1314554b792577a
1479ca0c5b3649
15391dc8b3ab1b
hex1c6359af7111

31213032010001 has 8 divisors (see below), whose sum is σ = 31680943408800. Its totient is φ = 30745180765728.

The previous prime is 31213032009997. The next prime is 31213032010081. The reversal of 31213032010001 is 10001023031213.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31213032010001 - 22 = 31213032009997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31213032010081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13992551 + ... + 16069148.

It is an arithmetic number, because the mean of its divisors is an integer number (3960117926100).

Almost surely, 231213032010001 is an apocalyptic number.

It is an amenable number.

31213032010001 is a deficient number, since it is larger than the sum of its proper divisors (467911398799).

31213032010001 is a wasteful number, since it uses less digits than its factorization.

31213032010001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30077263.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 31213032010001 its reverse (10001023031213), we get a palindrome (41214055041214).

The spelling of 31213032010001 in words is "thirty-one trillion, two hundred thirteen billion, thirty-two million, ten thousand, one".

Divisors: 1 67 15497 1038299 30061699 2014133833 465866149403 31213032010001