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31401364305 = 3515113863737
BaseRepresentation
bin11101001111101010…
…101100101101010001
310000001102012120210210
4131033222230231101
51003302222124210
622231532114333
72161104123033
oct351752545521
9100042176723
1031401364305
1112354284853
1261043059a9
132c6580084c
14173c5d3c53
15c3bb8ce20
hex74faacb51

31401364305 has 16 divisors (see below), whose sum is σ = 50574916224. Its totient is φ = 16636483200.

The previous prime is 31401364283. The next prime is 31401364321. The reversal of 31401364305 is 50346310413.

It is not a de Polignac number, because 31401364305 - 25 = 31401364273 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6929604 + ... + 6934133.

It is an arithmetic number, because the mean of its divisors is an integer number (3160932264).

Almost surely, 231401364305 is an apocalyptic number.

It is an amenable number.

31401364305 is a deficient number, since it is larger than the sum of its proper divisors (19173551919).

31401364305 is a wasteful number, since it uses less digits than its factorization.

31401364305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13863896.

The product of its (nonzero) digits is 12960, while the sum is 30.

Adding to 31401364305 its reverse (50346310413), we get a palindrome (81747674718).

The spelling of 31401364305 in words is "thirty-one billion, four hundred one million, three hundred sixty-four thousand, three hundred five".

Divisors: 1 3 5 15 151 453 755 2265 13863737 41591211 69318685 207956055 2093424287 6280272861 10467121435 31401364305