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31324320001 = 135694234733
BaseRepresentation
bin11101001011000100…
…110011000100000001
32222212001020022220001
4131023010303010001
51003123011220001
622220140520001
72156150220052
oct351304630401
988761208801
1031324320001
1112314842277
1260a2550001
132c528668c0
14173229a729
15c35020001
hex74b133101

31324320001 has 8 divisors (see below), whose sum is σ = 33793177320. Its totient is φ = 28863933312.

The previous prime is 31324319993. The next prime is 31324320007. The reversal of 31324320001 is 10002342313.

It can be written as a sum of positive squares in 4 ways, for example, as 1352400625 + 29971919376 = 36775^2 + 173124^2 .

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 31324320001 - 23 = 31324319993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31324320007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2109970 + ... + 2124763.

It is an arithmetic number, because the mean of its divisors is an integer number (4224147165).

Almost surely, 231324320001 is an apocalyptic number.

It is an amenable number.

31324320001 is a deficient number, since it is larger than the sum of its proper divisors (2468857319).

31324320001 is a wasteful number, since it uses less digits than its factorization.

31324320001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4235315.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 31324320001 its reverse (10002342313), we get a palindrome (41326662314).

The spelling of 31324320001 in words is "thirty-one billion, three hundred twenty-four million, three hundred twenty thousand, one".

Divisors: 1 13 569 7397 4234733 55051529 2409563077 31324320001