20143013 has 16 divisors (see below), whose sum is σ = 22921920. Its totient is φ = 17539200.

The previous prime is 20143007. The next prime is 20143027. The reversal of 20143013 is 31034102.

It is a cyclic number.

It is not a de Polignac number, because 20143013 - 2⁸ = 20142757 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20143033) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26231 + ... + 26987.

It is an arithmetic number, because the mean of its divisors is an integer number (1432620).

Almost surely, 2^20143013 is an apocalyptic number.

It is an amenable number.

20143013 is a deficient number, since it is larger than the sum of its proper divisors (2778907).

20143013 is a wasteful number, since it uses less digits than its factorization.

20143013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 868.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 20143013 is about 4488.0968126813. The cubic root of 20143013 is about 272.0872206228.

Adding to 20143013 its reverse (31034102), we get a palindrome (51177115).

The spelling of 20143013 in words is "twenty million, one hundred forty-three thousand, thirteen".