30690041 has 2 divisors, whose sum is σ = 30690042. Its totient is φ = 30690040.

The previous prime is 30690029. The next prime is 30690043. The reversal of 30690041 is 14009603.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20475625 + 10214416 = 4525^2 + 3196^2 .

It is an emirp because it is prime and its reverse (14009603) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30690041 is a prime.

Together with 30690043, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 30689989 and 30690016.

It is not a weakly prime, because it can be changed into another prime (30690043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15345020 + 15345021.

It is an arithmetic number, because the mean of its divisors is an integer number (15345021).

Almost surely, 2^30690041 is an apocalyptic number.

It is an amenable number.

30690041 is a deficient number, since it is larger than the sum of its proper divisors (1).

30690041 is an equidigital number, since it uses as much as digits as its factorization.

30690041 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 23.

The square root of 30690041 is about 5539.8592942420. The cubic root of 30690041 is about 313.0875678325.

Adding to 30690041 its reverse (14009603), we get a palindrome (44699644).

The spelling of 30690041 in words is "thirty million, six hundred ninety thousand, forty-one".