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102010031 = 197175619
BaseRepresentation
bin1100001010010…
…00110010101111
321002221122110022
412011020302233
5202103310111
614042232355
72346033224
oct605106257
9232848408
10102010031
1152644712
122a1b56bb
1318198686
14d79594b
158e502db
hex6148caf

102010031 has 8 divisors (see below), whose sum is σ = 108892800. Its totient is φ = 95278680.

The previous prime is 102009983. The next prime is 102010033. The reversal of 102010031 is 130010201.

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-102010031 is a prime.

It is a super-2 number, since 2×1020100312 = 20812092849241922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102010033) 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, 36461 + ... + 39158.

It is an arithmetic number, because the mean of its divisors is an integer number (13611600).

Almost surely, 2102010031 is an apocalyptic number.

102010031 is a deficient number, since it is larger than the sum of its proper divisors (6882769).

102010031 is an equidigital number, since it uses as much as digits as its factorization.

102010031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75709.

The product of its (nonzero) digits is 6, while the sum is 8.

The square root of 102010031 is about 10100.0015346533. The cubic root of 102010031 is about 467.2481887156.

Adding to 102010031 its reverse (130010201), we get a palindrome (232020232).

The spelling of 102010031 in words is "one hundred two million, ten thousand, thirty-one".

Divisors: 1 19 71 1349 75619 1436761 5368949 102010031