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31130165053 = 134615194421
BaseRepresentation
bin11100111111100000…
…001001111100111101
32222100111220020101001
4130333200021330331
51002223310240203
622145003250301
72151302015461
oct347740117475
988314806331
1031130165053
1112225191839
126049519991
132c21577c10
14171459a4a1
15c22e6c91d
hex73f809f3d

31130165053 has 8 divisors (see below), whose sum is σ = 33597521496. Its totient is φ = 28673198400.

The previous prime is 31130164999. The next prime is 31130165069. The reversal of 31130165053 is 35056103113.

It can be written as a sum of positive squares in 4 ways, for example, as 3678724 + 31126486329 = 1918^2 + 176427^2 .

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 31130165053 - 229 = 30593294141 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 (31130165083) 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, 2591218 + ... + 2603203.

It is an arithmetic number, because the mean of its divisors is an integer number (4199690187).

Almost surely, 231130165053 is an apocalyptic number.

It is an amenable number.

31130165053 is a deficient number, since it is larger than the sum of its proper divisors (2467356443).

31130165053 is a wasteful number, since it uses less digits than its factorization.

31130165053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5194895.

The product of its (nonzero) digits is 4050, while the sum is 28.

Adding to 31130165053 its reverse (35056103113), we get a palindrome (66186268166).

The spelling of 31130165053 in words is "thirty-one billion, one hundred thirty million, one hundred sixty-five thousand, fifty-three".

Divisors: 1 13 461 5993 5194421 67527473 2394628081 31130165053