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30210311131 = 7111330180131
BaseRepresentation
bin11100001000101011…
…001100001111011011
32212222102000211000021
4130020223030033123
5443332314424011
621513423451311
72116432256560
oct341053141733
985872024007
1030210311131
11118a2a29990
125a31456b37
132b05b1c760
141668352867
15bbc31d471
hex708acc3db

30210311131 has 16 divisors (see below), whose sum is σ = 40562097408. Its totient is φ = 21729693600.

The previous prime is 30210311129. The next prime is 30210311141. The reversal of 30210311131 is 13111301203.

It is a cyclic number.

It is not a de Polignac number, because 30210311131 - 21 = 30210311129 is a prime.

It is a super-2 number, since 2×302103111312 (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (30210311111) 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, 15089065 + ... + 15091066.

It is an arithmetic number, because the mean of its divisors is an integer number (2535131088).

Almost surely, 230210311131 is an apocalyptic number.

30210311131 is a deficient number, since it is larger than the sum of its proper divisors (10351786277).

30210311131 is a wasteful number, since it uses less digits than its factorization.

30210311131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30180162.

The product of its (nonzero) digits is 54, while the sum is 16.

Adding to 30210311131 its reverse (13111301203), we get a palindrome (43321612334).

The spelling of 30210311131 in words is "thirty billion, two hundred ten million, three hundred eleven thousand, one hundred thirty-one".

Divisors: 1 7 11 13 77 91 143 1001 30180131 211260917 331981441 392341703 2323870087 2746391921 4315758733 30210311131