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31020059 = 717092593
BaseRepresentation
bin111011001010…
…1010000011011
32011100222112002
41312111100123
530420120214
63024511215
7524444330
oct166252033
964328462
1031020059
1116567914
12a47b50b
136571385
144196987
152acb1de
hex1d9541b

31020059 has 8 divisors (see below), whose sum is σ = 35485920. Its totient is φ = 26562816.

The previous prime is 31020007. The next prime is 31020079. The reversal of 31020059 is 95002013.

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

It is not a de Polignac number, because 31020059 - 28 = 31019803 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31020059.

It is not an unprimeable number, because it can be changed into a prime (31020079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10667 + ... + 13259.

It is an arithmetic number, because the mean of its divisors is an integer number (4435740).

Almost surely, 231020059 is an apocalyptic number.

31020059 is a deficient number, since it is larger than the sum of its proper divisors (4465861).

31020059 is a wasteful number, since it uses less digits than its factorization.

31020059 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4309.

The product of its (nonzero) digits is 270, while the sum is 20.

The square root of 31020059 is about 5569.5654229033. The cubic root of 31020059 is about 314.2058064953.

The spelling of 31020059 in words is "thirty-one million, twenty thousand, fifty-nine".

Divisors: 1 7 1709 2593 11963 18151 4431437 31020059