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31044052979 = 39778196607
BaseRepresentation
bin11100111010010111…
…101010011111110011
32222010111212021210222
4130322113222133303
51002034234143404
622132245443255
72146205045042
oct347227523763
988114767728
1031044052979
1112190616535
12602471052b
132c09787824
141706d82559
15c1a60cdbe
hex73a5ea7f3

31044052979 has 4 divisors (see below), whose sum is σ = 31122249984. Its totient is φ = 30965855976.

The previous prime is 31044052933. The next prime is 31044053009. The reversal of 31044052979 is 97925044013.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 31044052979 - 28 = 31044052723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31044052279) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 39097907 + ... + 39098700.

It is an arithmetic number, because the mean of its divisors is an integer number (7780562496).

Almost surely, 231044052979 is an apocalyptic number.

31044052979 is a deficient number, since it is larger than the sum of its proper divisors (78197005).

31044052979 is an equidigital number, since it uses as much as digits as its factorization.

31044052979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78197004.

The product of its (nonzero) digits is 272160, while the sum is 44.

The spelling of 31044052979 in words is "thirty-one billion, forty-four million, fifty-two thousand, nine hundred seventy-nine".

Divisors: 1 397 78196607 31044052979