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BaseRepresentation
bin111011011001…
…0110010001001
32011121010102102
41312302302021
530433003001
63031243145
7525460043
oct166626211
964533372
1031141001
111663a771
12a5194b5
1365b4438
1441c8a93
152b01e6b
hex1db2c89

31141001 has 2 divisors, whose sum is σ = 31141002. Its totient is φ = 31141000.

The previous prime is 31140979. The next prime is 31141007. The reversal of 31141001 is 10014113.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24255625 + 6885376 = 4925^2 + 2624^2 .

It is an emirp because it is prime and its reverse (10014113) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-31141001 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (31141007) 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 as a sum of consecutive naturals, namely, 15570500 + 15570501.

It is an arithmetic number, because the mean of its divisors is an integer number (15570501).

Almost surely, 231141001 is an apocalyptic number.

It is an amenable number.

31141001 is a deficient number, since it is larger than the sum of its proper divisors (1).

31141001 is an equidigital number, since it uses as much as digits as its factorization.

31141001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 31141001 is about 5580.4122607564. The cubic root of 31141001 is about 314.6136221741.

Adding to 31141001 its reverse (10014113), we get a palindrome (41155114).

The spelling of 31141001 in words is "thirty-one million, one hundred forty-one thousand, one".