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30066335231 = 136721994393
BaseRepresentation
bin11100000000000101…
…111101110111111111
32212121101010002012112
4130000011331313333
5443033440211411
621451241524235
72113033430012
oct340005756777
985541102175
1030066335231
1111829731739
1259b11a367b
132ab204c80a
141653195379
15bae87db8b
hex70017ddff

30066335231 has 4 divisors (see below), whose sum is σ = 30088330992. Its totient is φ = 30044339472.

The previous prime is 30066335197. The next prime is 30066335239. The reversal of 30066335231 is 13253366003.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-30066335231 is a prime.

It is a super-2 number, since 2×300663352312 (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 (30066335239) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10995830 + ... + 10998563.

It is an arithmetic number, because the mean of its divisors is an integer number (7522082748).

Almost surely, 230066335231 is an apocalyptic number.

30066335231 is a deficient number, since it is larger than the sum of its proper divisors (21995761).

30066335231 is a wasteful number, since it uses less digits than its factorization.

30066335231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21995760.

The product of its (nonzero) digits is 29160, while the sum is 32.

The spelling of 30066335231 in words is "thirty billion, sixty-six million, three hundred thirty-five thousand, two hundred thirty-one".

Divisors: 1 1367 21994393 30066335231