30944928461 has 2 divisors, whose sum is σ = 30944928462. Its totient is φ = 30944928460.

The previous prime is 30944928439. The next prime is 30944928523. The reversal of 30944928461 is 16482944903.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30909156100 + 35772361 = 175810^2 + 5981^2 .

It is an emirp because it is prime and its reverse (16482944903) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30944928461 - 2⁶ = 30944928397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30944928061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15472464230 + 15472464231.

It is an arithmetic number, because the mean of its divisors is an integer number (15472464231).

Almost surely, 2^30944928461 is an apocalyptic number.

It is an amenable number.

30944928461 is a deficient number, since it is larger than the sum of its proper divisors (1).

30944928461 is an equidigital number, since it uses as much as digits as its factorization.

30944928461 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1492992, while the sum is 50.

The spelling of 30944928461 in words is "thirty billion, nine hundred forty-four million, nine hundred twenty-eight thousand, four hundred sixty-one".