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30013112111 = 1722633831031
BaseRepresentation
bin11011111100111010…
…111011111100101111
32212110122222001210212
4123330322323330233
5442431324041421
621442101053035
72111516146403
oct337472737457
985418861725
1030013112111
111180168a394
1259973b717b
132aa4006348
14164a09d103
15ba9d68e5b
hex6fcebbf2f

30013112111 has 24 divisors (see below), whose sum is σ = 32118349824. Its totient is φ = 28039533440.

The previous prime is 30013112027. The next prime is 30013112149. The reversal of 30013112111 is 11121131003.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2k-30013112111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30013112611) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29110166 + ... + 29111196.

It is an arithmetic number, because the mean of its divisors is an integer number (1338264576).

Almost surely, 230013112111 is an apocalyptic number.

30013112111 is a deficient number, since it is larger than the sum of its proper divisors (2105237713).

30013112111 is a wasteful number, since it uses less digits than its factorization.

30013112111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1711 (or 1694 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 14.

Adding to 30013112111 its reverse (11121131003), we get a palindrome (41134243114).

The spelling of 30013112111 in words is "thirty billion, thirteen million, one hundred twelve thousand, one hundred eleven".

Divisors: 1 17 263 289 383 1031 4471 6511 17527 76007 100729 110687 271153 297959 394873 1712393 4609601 6712841 29110681 78363217 103851599 114118297 1765477183 30013112111