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10302042031 = 32093210359
BaseRepresentation
bin10011001100000110…
…01010111110101111
3222120222002221220021
421212003022332233
5132044310321111
64422132303011
7513202624651
oct114603127657
928528087807
1010302042031
114407263726
121bb6171a67
13c82451878
146da3086d1
15404671d71
hex2660cafaf

10302042031 has 4 divisors (see below), whose sum is σ = 10305255600. Its totient is φ = 10298828464.

The previous prime is 10302042017. The next prime is 10302042067. The reversal of 10302042031 is 13024020301.

It is a happy number.

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 10302042031 - 27 = 10302041903 is a prime.

It is a super-2 number, since 2×103020420312 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10302041996 and 10302042014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10302042011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1601971 + ... + 1608388.

It is an arithmetic number, because the mean of its divisors is an integer number (2576313900).

Almost surely, 210302042031 is an apocalyptic number.

10302042031 is a deficient number, since it is larger than the sum of its proper divisors (3213569).

10302042031 is an equidigital number, since it uses as much as digits as its factorization.

10302042031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3213568.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 10302042031 its reverse (13024020301), we get a palindrome (23326062332).

The spelling of 10302042031 in words is "ten billion, three hundred two million, forty-two thousand, thirty-one".

Divisors: 1 3209 3210359 10302042031