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30101404021 = 132979844573
BaseRepresentation
bin11100000010001011…
…101111100101110101
32212200211002202112121
4130002023233211311
5443121424412041
621454533315541
72113640466253
oct340213574565
985624082477
1030101404021
1111847504407
125a00a95bb1
132ab93aa990
141657ac35d3
15bb29a97d1
hex7022ef975

30101404021 has 8 divisors (see below), whose sum is σ = 33534721080. Its totient is φ = 26827776192.

The previous prime is 30101404019. The next prime is 30101404087. The reversal of 30101404021 is 12040410103.

It can be written as a sum of positive squares in 4 ways, for example, as 255040900 + 29846363121 = 15970^2 + 172761^2 .

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 30101404021 - 21 = 30101404019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30101403986 and 30101404004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30101404001) 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, 39921910 + ... + 39922663.

It is an arithmetic number, because the mean of its divisors is an integer number (4191840135).

Almost surely, 230101404021 is an apocalyptic number.

It is an amenable number.

30101404021 is a deficient number, since it is larger than the sum of its proper divisors (3433317059).

30101404021 is a wasteful number, since it uses less digits than its factorization.

30101404021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79844615.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 30101404021 its reverse (12040410103), we get a palindrome (42141814124).

The spelling of 30101404021 in words is "thirty billion, one hundred one million, four hundred four thousand, twenty-one".

Divisors: 1 13 29 377 79844573 1037979449 2315492617 30101404021