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31430230303 = 411136783991
BaseRepresentation
bin11101010001011000…
…110100000100011111
310000010102112010111211
4131101120310010133
51003332114332203
622234442525251
72161604356333
oct352130640437
9100112463454
1031430230303
111236960024a
126111b06827
132c6b799614
1417423897c3
15c3e490c6d
hex75163411f

31430230303 has 8 divisors (see below), whose sum is σ = 32481753696. Its totient is φ = 30392275200.

The previous prime is 31430230267. The next prime is 31430230313. The reversal of 31430230303 is 30303203413.

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-31430230303 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31430230313) 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, 3387363 + ... + 3396628.

It is an arithmetic number, because the mean of its divisors is an integer number (4060219212).

Almost surely, 231430230303 is an apocalyptic number.

31430230303 is a deficient number, since it is larger than the sum of its proper divisors (1051523393).

31430230303 is a wasteful number, since it uses less digits than its factorization.

31430230303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6784145.

The product of its (nonzero) digits is 1944, while the sum is 22.

Adding to 31430230303 its reverse (30303203413), we get a palindrome (61733433716).

The spelling of 31430230303 in words is "thirty-one billion, four hundred thirty million, two hundred thirty thousand, three hundred three".

Divisors: 1 41 113 4633 6783991 278143631 766590983 31430230303