13030312261 has 2 divisors, whose sum is σ = 13030312262. Its totient is φ = 13030312260.

The previous prime is 13030312259. The next prime is 13030312313. The reversal of 13030312261 is 16221303031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8261719236 + 4768593025 = 90894^2 + 69055^2 .

It is a cyclic number.

It is not a de Polignac number, because 13030312261 - 2¹ = 13030312259 is a prime.

Together with 13030312259, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13030310261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6515156130 + 6515156131.

It is an arithmetic number, because the mean of its divisors is an integer number (6515156131).

Almost surely, 2^13030312261 is an apocalyptic number.

It is an amenable number.

13030312261 is a deficient number, since it is larger than the sum of its proper divisors (1).

13030312261 is an equidigital number, since it uses as much as digits as its factorization.

13030312261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 13030312261 its reverse (16221303031), we get a palindrome (29251615292).

The spelling of 13030312261 in words is "thirteen billion, thirty million, three hundred twelve thousand, two hundred sixty-one".