32313440261 has 2 divisors, whose sum is σ = 32313440262. Its totient is φ = 32313440260.

The previous prime is 32313440213. The next prime is 32313440279. The reversal of 32313440261 is 16204431323.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19350479236 + 12962961025 = 139106^2 + 113855^2 .

It is an emirp because it is prime and its reverse (16204431323) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 32313440261 - 2¹⁰ = 32313439237 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (32313440161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16156720130 + 16156720131.

It is an arithmetic number, because the mean of its divisors is an integer number (16156720131).

Almost surely, 2^32313440261 is an apocalyptic number.

It is an amenable number.

32313440261 is a deficient number, since it is larger than the sum of its proper divisors (1).

32313440261 is an equidigital number, since it uses as much as digits as its factorization.

32313440261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 29.

Adding to 32313440261 its reverse (16204431323), we get a palindrome (48517871584).

The spelling of 32313440261 in words is "thirty-two billion, three hundred thirteen million, four hundred forty thousand, two hundred sixty-one".