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67431023 = 1160710099
BaseRepresentation
bin1000000010011…
…10101001101111
311200212211222022
410001032221233
5114230243043
610405140355
71446103622
oct401165157
9150784868
1067431023
1135076a20
121a6ba6bb
1310c7c41a
148d53db9
155dbe868
hex404ea6f

67431023 has 8 divisors (see below), whose sum is σ = 73689600. Its totient is φ = 61193880.

The previous prime is 67430971. The next prime is 67431059. The reversal of 67431023 is 32013476.

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

It is a de Polignac number, because none of the positive numbers 2k-67431023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 67430983 and 67431001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67431083) 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, 1628 + ... + 11726.

It is an arithmetic number, because the mean of its divisors is an integer number (9211200).

Almost surely, 267431023 is an apocalyptic number.

67431023 is a deficient number, since it is larger than the sum of its proper divisors (6258577).

67431023 is a wasteful number, since it uses less digits than its factorization.

67431023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10717.

The product of its (nonzero) digits is 3024, while the sum is 26.

The square root of 67431023 is about 8211.6394830752. The cubic root of 67431023 is about 407.0239045658.

Adding to 67431023 its reverse (32013476), we get a palindrome (99444499).

The spelling of 67431023 in words is "sixty-seven million, four hundred thirty-one thousand, twenty-three".

Divisors: 1 11 607 6677 10099 111089 6130093 67431023