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30881539882771 = 236761993232769
BaseRepresentation
bin1110000010110001010110…
…01101101111111100010011
311001100020122121111201111221
413001120223031233330103
513021430343202222041
6145402441130145511
76335055226640044
oct701305315577423
9131306577451457
1030881539882771
119926873202616
123569071282297
131430169568066
1478a962bb28cb
153884768612d1
hex1c162b36ff13

30881539882771 has 16 divisors (see below), whose sum is σ = 32710459968000. Its totient is φ = 29093282684928.

The previous prime is 30881539882757. The next prime is 30881539882789. The reversal of 30881539882771 is 17728893518803.

It is a cyclic number.

It is not a de Polignac number, because 30881539882771 - 213 = 30881539874579 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30881539882771.

It is not an unprimeable number, because it can be changed into a prime (30881539882871) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7936275 + ... + 11169043.

It is an arithmetic number, because the mean of its divisors is an integer number (2044403748000).

Almost surely, 230881539882771 is an apocalyptic number.

30881539882771 is a deficient number, since it is larger than the sum of its proper divisors (1828920085229).

30881539882771 is a wasteful number, since it uses less digits than its factorization.

30881539882771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3239058.

The product of its (nonzero) digits is 162570240, while the sum is 70.

The spelling of 30881539882771 in words is "thirty trillion, eight hundred eighty-one billion, five hundred thirty-nine million, eight hundred eighty-two thousand, seven hundred seventy-one".

Divisors: 1 23 67 1541 6199 142577 415333 3232769 9552659 74353687 216595523 4981697029 20039935031 460918505713 1342675647077 30881539882771