20131300061 has 2 divisors, whose sum is σ = 20131300062. Its totient is φ = 20131300060.

The previous prime is 20131300043. The next prime is 20131300117. The reversal of 20131300061 is 16000313102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19196102500 + 935197561 = 138550^2 + 30581^2 .

It is a cyclic number.

It is not a de Polignac number, because 20131300061 - 2¹⁴ = 20131283677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20131350061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10065650030 + 10065650031.

It is an arithmetic number, because the mean of its divisors is an integer number (10065650031).

Almost surely, 2^20131300061 is an apocalyptic number.

It is an amenable number.

20131300061 is a deficient number, since it is larger than the sum of its proper divisors (1).

20131300061 is an equidigital number, since it uses as much as digits as its factorization.

20131300061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 20131300061 its reverse (16000313102), we get a palindrome (36131613163).

The spelling of 20131300061 in words is "twenty billion, one hundred thirty-one million, three hundred thousand, sixty-one".