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30212020231 = 238191160367
BaseRepresentation
bin11100001000110001…
…101101100000000111
32212222112020122110021
4130020301231200013
5443333234121411
621513524240011
72116452635431
oct341061554007
985875218407
1030212020231
11118a3996a68
125a31b40007
132b0629a663
141668679651
15bbc559a71
hex708c6d807

30212020231 has 8 divisors (see below), whose sum is σ = 31529631744. Its totient is φ = 28894745880.

The previous prime is 30212020211. The next prime is 30212020249. The reversal of 30212020231 is 13202021203.

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 30212020231 - 27 = 30212020103 is a prime.

It is a super-2 number, since 2×302120202312 (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 (30212020211) 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, 108210 + ... + 268576.

It is an arithmetic number, because the mean of its divisors is an integer number (3941203968).

Almost surely, 230212020231 is an apocalyptic number.

30212020231 is a deficient number, since it is larger than the sum of its proper divisors (1317611513).

30212020231 is a wasteful number, since it uses less digits than its factorization.

30212020231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168581.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 30212020231 its reverse (13202021203), we get a palindrome (43414041434).

The spelling of 30212020231 in words is "thirty billion, two hundred twelve million, twenty thousand, two hundred thirty-one".

Divisors: 1 23 8191 160367 188393 3688441 1313566097 30212020231