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30568013131 = 97141577573
BaseRepresentation
bin11100011101111111…
…101101110101001011
32220220100002221220111
4130131333231311023
51000100402410011
622013122335151
72131334552545
oct343577556513
986810087814
1030568013131
1111a66934777
125b111ba4b7
132b61c71546
14169da66695
15bdd929121
hex71dfedd4b

30568013131 has 8 divisors (see below), whose sum is σ = 30610896624. Its totient is φ = 30525155040.

The previous prime is 30568013087. The next prime is 30568013213. The reversal of 30568013131 is 13131086503.

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 30568013131 - 223 = 30559624523 is a prime.

It is a super-2 number, since 2×305680131312 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30568013093 and 30568013102.

It is not an unprimeable number, because it can be changed into a prime (30568017131) 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, 4032661 + ... + 4040233.

It is an arithmetic number, because the mean of its divisors is an integer number (3826362078).

Almost surely, 230568013131 is an apocalyptic number.

30568013131 is a deficient number, since it is larger than the sum of its proper divisors (42883493).

30568013131 is an equidigital number, since it uses as much as digits as its factorization.

30568013131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12701.

The product of its (nonzero) digits is 6480, while the sum is 31.

Adding to 30568013131 its reverse (13131086503), we get a palindrome (43699099634).

The spelling of 30568013131 in words is "thirty billion, five hundred sixty-eight million, thirteen thousand, one hundred thirty-one".

Divisors: 1 971 4157 7573 4036447 7353383 31480961 30568013131