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31541014404 = 2232876139289
BaseRepresentation
bin11101010111111111…
…011010111110000100
310000102010222112201200
4131113333122332010
51004043444430104
622253441222500
72164421125134
oct352777327604
9100363875650
1031541014404
1112416097a59
126143031a30
132c88717843
141752d86ac4
15c49075b39
hex757fdaf84

31541014404 has 18 divisors (see below), whose sum is σ = 79728675390. Its totient is φ = 10513671456.

The previous prime is 31541014399. The next prime is 31541014451. The reversal of 31541014404 is 40441014513.

31541014404 is a `hidden beast` number, since 3 + 154 + 101 + 4 + 404 = 666.

It can be written as a sum of positive squares in only one way, i.e., 24117468804 + 7423545600 = 155298^2 + 86160^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 438069609 + ... + 438069680.

It is an arithmetic number, because the mean of its divisors is an integer number (4429370855).

Almost surely, 231541014404 is an apocalyptic number.

It is an amenable number.

31541014404 is an abundant number, since it is smaller than the sum of its proper divisors (48187660986).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31541014404 is a wasteful number, since it uses less digits than its factorization.

31541014404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 876139299 (or 876139294 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

Adding to 31541014404 its reverse (40441014513), we get a palindrome (71982028917).

The spelling of 31541014404 in words is "thirty-one billion, five hundred forty-one million, fourteen thousand, four hundred four".

Divisors: 1 2 3 4 6 9 12 18 36 876139289 1752278578 2628417867 3504557156 5256835734 7885253601 10513671468 15770507202 31541014404