30319481 has 2 divisors, whose sum is σ = 30319482. Its totient is φ = 30319480.

The previous prime is 30319463. The next prime is 30319537. The reversal of 30319481 is 18491303.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30085225 + 234256 = 5485^2 + 484^2 .

It is a cyclic number.

It is not a de Polignac number, because 30319481 - 2⁶ = 30319417 is a prime.

It is a super-2 number, since 2×30319481² = 1838541856218722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (30312481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15159740 + 15159741.

It is an arithmetic number, because the mean of its divisors is an integer number (15159741).

Almost surely, 2^30319481 is an apocalyptic number.

It is an amenable number.

30319481 is a deficient number, since it is larger than the sum of its proper divisors (1).

30319481 is an equidigital number, since it uses as much as digits as its factorization.

30319481 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 30319481 is about 5506.3128316506. The cubic root of 30319481 is about 311.8223601155.

The spelling of 30319481 in words is "thirty million, three hundred nineteen thousand, four hundred eighty-one".