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31103405050055 = 513478513923847
BaseRepresentation
bin1110001001001110100110…
…11010001100100011000111
311002010110022202221222202212
413010213103122030203013
513034044233143100210
6150052412414454035
76360101241513332
oct704472332144307
9132113282858685
1031103405050055
119a019753175a8
1235a406b50431b
1314480667bab30
147975acb77619
1538e10e67d805
hex1c49d368c8c7

31103405050055 has 8 divisors (see below), whose sum is σ = 40195169603232. Its totient is φ = 22968668344608.

The previous prime is 31103405050043. The next prime is 31103405050111. The reversal of 31103405050055 is 55005050430113.

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 31103405050055 - 214 = 31103405033671 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 239256961859 + ... + 239256961988.

It is an arithmetic number, because the mean of its divisors is an integer number (5024396200404).

Almost surely, 231103405050055 is an apocalyptic number.

31103405050055 is a deficient number, since it is larger than the sum of its proper divisors (9091764553177).

31103405050055 is a wasteful number, since it uses less digits than its factorization.

31103405050055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478513923865.

The product of its (nonzero) digits is 22500, while the sum is 32.

Adding to 31103405050055 its reverse (55005050430113), we get a palindrome (86108455480168).

The spelling of 31103405050055 in words is "thirty-one trillion, one hundred three billion, four hundred five million, fifty thousand, fifty-five".

Divisors: 1 5 13 65 478513923847 2392569619235 6220681010011 31103405050055