30481013 has 2 divisors, whose sum is σ = 30481014. Its totient is φ = 30481012.

The previous prime is 30480991. The next prime is 30481019. The reversal of 30481013 is 31018403.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30228004 + 253009 = 5498^2 + 503^2 .

It is a cyclic number.

It is not a de Polignac number, because 30481013 - 2¹⁰ = 30479989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30481019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15240506 + 15240507.

It is an arithmetic number, because the mean of its divisors is an integer number (15240507).

Almost surely, 2^30481013 is an apocalyptic number.

It is an amenable number.

30481013 is a deficient number, since it is larger than the sum of its proper divisors (1).

30481013 is an equidigital number, since it uses as much as digits as its factorization.

30481013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 30481013 is about 5520.9612387699. The cubic root of 30481013 is about 312.3751411595.

Adding to 30481013 its reverse (31018403), we get a palindrome (61499416).

The spelling of 30481013 in words is "thirty million, four hundred eighty-one thousand, thirteen".