2000312261 has 2 divisors, whose sum is σ = 2000312262. Its totient is φ = 2000312260.

The previous prime is 2000312257. The next prime is 2000312297. The reversal of 2000312261 is 1622130002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1349092900 + 651219361 = 36730^2 + 25519^2 .

It is a cyclic number.

It is not a de Polignac number, because 2000312261 - 2² = 2000312257 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2000317261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000156130 + 1000156131.

It is an arithmetic number, because the mean of its divisors is an integer number (1000156131).

Almost surely, 2^2000312261 is an apocalyptic number.

It is an amenable number.

2000312261 is a deficient number, since it is larger than the sum of its proper divisors (1).

2000312261 is an equidigital number, since it uses as much as digits as its factorization.

2000312261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 2000312261 is about 44724.8505978500. The cubic root of 2000312261 is about 1259.9866171838.

Adding to 2000312261 its reverse (1622130002), we get a palindrome (3622442263).

The spelling of 2000312261 in words is "two billion, three hundred twelve thousand, two hundred sixty-one".