20161013 has 2 divisors, whose sum is σ = 20161014. Its totient is φ = 20161012.

The previous prime is 20161007. The next prime is 20161019. The reversal of 20161013 is 31016102.

It is a balanced prime because it is at equal distance from previous prime (20161007) and next prime (20161019).

It can be written as a sum of positive squares in only one way, i.e., 10876804 + 9284209 = 3298^2 + 3047^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20161013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20161019) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10080506 + 10080507.

It is an arithmetic number, because the mean of its divisors is an integer number (10080507).

Almost surely, 2^20161013 is an apocalyptic number.

It is an amenable number.

20161013 is a deficient number, since it is larger than the sum of its proper divisors (1).

20161013 is an equidigital number, since it uses as much as digits as its factorization.

20161013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 20161013 is about 4490.1016692275. The cubic root of 20161013 is about 272.1682431235.

Adding to 20161013 its reverse (31016102), we get a palindrome (51177115).

The spelling of 20161013 in words is "twenty million, one hundred sixty-one thousand, thirteen".