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3123454121 is a prime number
BaseRepresentation
bin1011101000101100…
…0010000010101001
322001200022220112222
42322023002002221
522344101012441
61233534243425
7140254631144
oct27213020251
98050286488
103123454121
111363121347
12732056575
133aa14a708
14218b8105b
1513432cd4b
hexba2c20a9

3123454121 has 2 divisors, whose sum is σ = 3123454122. Its totient is φ = 3123454120.

The previous prime is 3123454111. The next prime is 3123454157. The reversal of 3123454121 is 1214543213.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2902515625 + 220938496 = 53875^2 + 14864^2 .

It is a cyclic number.

It is not a de Polignac number, because 3123454121 - 26 = 3123454057 is a prime.

It is a super-3 number, since 3×31234541213 (a number of 29 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (3123454111) 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, 1561727060 + 1561727061.

It is an arithmetic number, because the mean of its divisors is an integer number (1561727061).

Almost surely, 23123454121 is an apocalyptic number.

It is an amenable number.

3123454121 is a deficient number, since it is larger than the sum of its proper divisors (1).

3123454121 is an equidigital number, since it uses as much as digits as its factorization.

3123454121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2880, while the sum is 26.

The square root of 3123454121 is about 55887.8709649956. The cubic root of 3123454121 is about 1461.7677532040.

Adding to 3123454121 its reverse (1214543213), we get a palindrome (4337997334).

The spelling of 3123454121 in words is "three billion, one hundred twenty-three million, four hundred fifty-four thousand, one hundred twenty-one".