30469865281 has 2 divisors, whose sum is σ = 30469865282. Its totient is φ = 30469865280.

The previous prime is 30469865267. The next prime is 30469865351. The reversal of 30469865281 is 18256896403.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23311182400 + 7158682881 = 152680^2 + 84609^2 .

It is a cyclic number.

It is not a de Polignac number, because 30469865281 - 2⁹ = 30469864769 is a prime.

It is a super-2 number, since 2×30469865281² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (30469865581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15234932640 + 15234932641.

It is an arithmetic number, because the mean of its divisors is an integer number (15234932641).

Almost surely, 2^30469865281 is an apocalyptic number.

It is an amenable number.

30469865281 is a deficient number, since it is larger than the sum of its proper divisors (1).

30469865281 is an equidigital number, since it uses as much as digits as its factorization.

30469865281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2488320, while the sum is 52.

The spelling of 30469865281 in words is "thirty billion, four hundred sixty-nine million, eight hundred sixty-five thousand, two hundred eighty-one".