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1003431641 is a prime number
BaseRepresentation
bin111011110011110…
…010011011011001
32120221010121102212
4323303302123121
54023334303031
6243323004505
733603012452
oct7363623331
92527117385
101003431641
11475458053
12240069735
1312cb6c144
14973a2129
155d15d12b
hex3bcf26d9

1003431641 has 2 divisors, whose sum is σ = 1003431642. Its totient is φ = 1003431640.

The previous prime is 1003431619. The next prime is 1003431643. The reversal of 1003431641 is 1461343001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 963792025 + 39639616 = 31045^2 + 6296^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-1003431641 is a prime.

Together with 1003431643, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1003431643) 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 as a sum of consecutive naturals, namely, 501715820 + 501715821.

It is an arithmetic number, because the mean of its divisors is an integer number (501715821).

Almost surely, 21003431641 is an apocalyptic number.

It is an amenable number.

1003431641 is a deficient number, since it is larger than the sum of its proper divisors (1).

1003431641 is an equidigital number, since it uses as much as digits as its factorization.

1003431641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 1003431641 is about 31676.9891403839. The cubic root of 1003431641 is about 1001.1425743600.

Adding to 1003431641 its reverse (1461343001), we get a palindrome (2464774642).

The spelling of 1003431641 in words is "one billion, three million, four hundred thirty-one thousand, six hundred forty-one".