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30210311231 = 1131409189743
BaseRepresentation
bin11100001000101011…
…001100010000111111
32212222102000211010222
4130020223030100333
5443332314424411
621513423451555
72116432260062
oct341053142077
985872024128
1030210311231
11118a2a29a71
125a31456bbb
132b05b1c809
1416683528d9
15bbc31d4db
hex708acc43f

30210311231 has 8 divisors (see below), whose sum is σ = 30499450560. Its totient is φ = 29921554432.

The previous prime is 30210311203. The next prime is 30210311273. The reversal of 30210311231 is 13211301203.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-30210311231 is a prime.

It is a super-2 number, since 2×302103112312 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30210311281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64346 + ... + 254088.

It is an arithmetic number, because the mean of its divisors is an integer number (3812431320).

Almost surely, 230210311231 is an apocalyptic number.

30210311231 is a deficient number, since it is larger than the sum of its proper divisors (289139329).

30210311231 is a wasteful number, since it uses less digits than its factorization.

30210311231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191265.

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

Adding to 30210311231 its reverse (13211301203), we get a palindrome (43421612434).

The spelling of 30210311231 in words is "thirty billion, two hundred ten million, three hundred eleven thousand, two hundred thirty-one".

Divisors: 1 113 1409 159217 189743 21440959 267347887 30210311231