2013143121 has 12 divisors (see below), whose sum is σ = 3172225680. Its totient is φ = 1220086680.

The previous prime is 2013143117. The next prime is 2013143129. The reversal of 2013143121 is 1213413102.

2013143121 is a `hidden beast` number, since 201 + 31 + 431 + 2 + 1 = 666.

It is not a de Polignac number, because 2013143121 - 2² = 2013143117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2013143094 and 2013143103.

It is not an unprimeable number, because it can be changed into a prime (2013143129) 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 11 ways as a sum of consecutive naturals, for example, 10167291 + ... + 10167488.

It is an arithmetic number, because the mean of its divisors is an integer number (264352140).

Almost surely, 2^2013143121 is an apocalyptic number.

It is an amenable number.

2013143121 is a deficient number, since it is larger than the sum of its proper divisors (1159082559).

2013143121 is a wasteful number, since it uses less digits than its factorization.

2013143121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20334796 (or 20334793 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 2013143121 is about 44868.0634861813. The cubic root of 2013143121 is about 1262.6749087602.

Adding to 2013143121 its reverse (1213413102), we get a palindrome (3226556223).

The spelling of 2013143121 in words is "two billion, thirteen million, one hundred forty-three thousand, one hundred twenty-one".