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3230143121 = 8338917387
BaseRepresentation
bin1100000010001000…
…0001001010010001
322100010002021100102
43000202001022101
523103404034441
61252305102145
7143021522612
oct30042011221
98303067312
103230143121
111408371377
12761927955
133c62939ba
14228dd3c09
1513d8a469b
hexc0881291

3230143121 has 4 divisors (see below), whose sum is σ = 3269060592. Its totient is φ = 3191225652.

The previous prime is 3230143117. The next prime is 3230143153. The reversal of 3230143121 is 1213410323.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1213410323 = 7643158761.

It is a cyclic number.

It is not a de Polignac number, because 3230143121 - 22 = 3230143117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3230143093 and 3230143102.

It is not an unprimeable number, because it can be changed into a prime (3230143421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19458611 + ... + 19458776.

It is an arithmetic number, because the mean of its divisors is an integer number (817265148).

Almost surely, 23230143121 is an apocalyptic number.

It is an amenable number.

3230143121 is a deficient number, since it is larger than the sum of its proper divisors (38917471).

3230143121 is an equidigital number, since it uses as much as digits as its factorization.

3230143121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38917470.

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

The square root of 3230143121 is about 56834.3480740300. The cubic root of 3230143121 is about 1478.2251552628.

Adding to 3230143121 its reverse (1213410323), we get a palindrome (4443553444).

The spelling of 3230143121 in words is "three billion, two hundred thirty million, one hundred forty-three thousand, one hundred twenty-one".

Divisors: 1 83 38917387 3230143121