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31342509105 = 352418670127
BaseRepresentation
bin11101001100001010…
…001011110000110001
32222220022110102122120
4131030022023300301
51003142140242410
622222030424453
72156460634365
oct351412136061
988808412576
1031342509105
1112324035a96
1260a8662129
132c5656499b
1417348732a5
15c36914570
hex74c28bc31

31342509105 has 16 divisors (see below), whose sum is σ = 50356103424. Its totient is φ = 16646641920.

The previous prime is 31342509089. The next prime is 31342509127. The reversal of 31342509105 is 50190524313.

It is not a de Polignac number, because 31342509105 - 24 = 31342509089 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, 4331449 + ... + 4338678.

It is an arithmetic number, because the mean of its divisors is an integer number (3147256464).

Almost surely, 231342509105 is an apocalyptic number.

It is an amenable number.

31342509105 is a deficient number, since it is larger than the sum of its proper divisors (19013594319).

31342509105 is a wasteful number, since it uses less digits than its factorization.

31342509105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8670376.

The product of its (nonzero) digits is 16200, while the sum is 33.

The spelling of 31342509105 in words is "thirty-one billion, three hundred forty-two million, five hundred nine thousand, one hundred five".

Divisors: 1 3 5 15 241 723 1205 3615 8670127 26010381 43350635 130051905 2089500607 6268501821 10447503035 31342509105