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1030431143 = 7221029207
BaseRepresentation
bin111101011010110…
…010000110100111
32122210221022210102
4331122302012213
54102242244033
6250125414315
734351343300
oct7532620647
92583838712
101030431143
11489719195
1224910a39b
13135633491
149abcd7a7
15606e2de8
hex3d6b21a7

1030431143 has 6 divisors (see below), whose sum is σ = 1198664856. Its totient is φ = 883226652.

The previous prime is 1030431133. The next prime is 1030431151. The reversal of 1030431143 is 3411340301.

It is not a de Polignac number, because 1030431143 - 216 = 1030365607 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 (1030431113) 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 5 ways as a sum of consecutive naturals, for example, 10514555 + ... + 10514652.

It is an arithmetic number, because the mean of its divisors is an integer number (199777476).

Almost surely, 21030431143 is an apocalyptic number.

1030431143 is a deficient number, since it is larger than the sum of its proper divisors (168233713).

1030431143 is an equidigital number, since it uses as much as digits as its factorization.

1030431143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21029221 (or 21029214 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 1030431143 is about 32100.3293285287. The cubic root of 1030431143 is about 1010.0425244325.

Adding to 1030431143 its reverse (3411340301), we get a palindrome (4441771444).

The spelling of 1030431143 in words is "one billion, thirty million, four hundred thirty-one thousand, one hundred forty-three".

Divisors: 1 7 49 21029207 147204449 1030431143