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31289082259 = 297907136453
BaseRepresentation
bin11101001000111110…
…011000000110010011
32222202120221001210111
4131020332120012103
51003040001113014
622212441342151
72155241545111
oct351076300623
988676831714
1031289082259
11122a6964676
126092797957
132c48479876
14172b726ab1
15c31dae2c4
hex748f98193

31289082259 has 8 divisors (see below), whose sum is σ = 32372346960. Its totient is φ = 30206106336.

The previous prime is 31289082241. The next prime is 31289082269. The reversal of 31289082259 is 95228098213.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-31289082259 is a prime.

It is a super-2 number, since 2×312890822592 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31289082239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 161077 + ... + 297529.

It is an arithmetic number, because the mean of its divisors is an integer number (4046543370).

Almost surely, 231289082259 is an apocalyptic number.

31289082259 is a deficient number, since it is larger than the sum of its proper divisors (1083264701).

31289082259 is a wasteful number, since it uses less digits than its factorization.

31289082259 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144389.

The product of its (nonzero) digits is 622080, while the sum is 49.

The spelling of 31289082259 in words is "thirty-one billion, two hundred eighty-nine million, eighty-two thousand, two hundred fifty-nine".

Divisors: 1 29 7907 136453 229303 3957137 1078933871 31289082259