200031561061 has 2 divisors, whose sum is σ = 200031561062. Its totient is φ = 200031561060.

The previous prime is 200031561007. The next prime is 200031561097. The reversal of 200031561061 is 160165130002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 144997216225 + 55034344836 = 380785^2 + 234594^2 .

It is a cyclic number.

It is not a de Polignac number, because 200031561061 - 2⁷ = 200031560933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200031567061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100015780530 + 100015780531.

It is an arithmetic number, because the mean of its divisors is an integer number (100015780531).

Almost surely, 2^200031561061 is an apocalyptic number.

It is an amenable number.

200031561061 is a deficient number, since it is larger than the sum of its proper divisors (1).

200031561061 is an equidigital number, since it uses as much as digits as its factorization.

200031561061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 25.

Adding to 200031561061 its reverse (160165130002), we get a palindrome (360196691063).

The spelling of 200031561061 in words is "two hundred billion, thirty-one million, five hundred sixty-one thousand, sixty-one".