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30101100031 = 179887179089
BaseRepresentation
bin11100000010001010…
…100101010111111111
32212200210112022112201
4130002022211113333
5443121340200111
621454523012331
72113635062062
oct340212452777
985623468481
1030101100031
1111847316a82
125a0096a0a7
132ab93024c2
141657a448d9
15bb29496c1
hex7022a55ff

30101100031 has 8 divisors (see below), whose sum is σ = 31875154560. Its totient is φ = 28327423488.

The previous prime is 30101100019. The next prime is 30101100047. The reversal of 30101100031 is 13000110103.

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 30101100031 - 233 = 21511165439 is a prime.

It is a super-2 number, since 2×301011000312 (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 = 30101099990 and 30101100017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30101104031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78535 + ... + 257623.

It is an arithmetic number, because the mean of its divisors is an integer number (3984394320).

Almost surely, 230101100031 is an apocalyptic number.

30101100031 is a deficient number, since it is larger than the sum of its proper divisors (1774054529).

30101100031 is a wasteful number, since it uses less digits than its factorization.

30101100031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188993.

The product of its (nonzero) digits is 9, while the sum is 10.

Adding to 30101100031 its reverse (13000110103), we get a palindrome (43101210134).

The spelling of 30101100031 in words is "thirty billion, one hundred one million, one hundred thousand, thirty-one".

Divisors: 1 17 9887 168079 179089 3044513 1770652943 30101100031