30513941 has 2 divisors, whose sum is σ = 30513942. Its totient is φ = 30513940.

The previous prime is 30513911. The next prime is 30513947. The reversal of 30513941 is 14931503.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20566225 + 9947716 = 4535^2 + 3154^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30513941 is a prime.

It is a super-2 number, since 2×30513941² = 1862201190702962, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 30513941.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30513947) 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, 15256970 + 15256971.

It is an arithmetic number, because the mean of its divisors is an integer number (15256971).

Almost surely, 2^30513941 is an apocalyptic number.

It is an amenable number.

30513941 is a deficient number, since it is larger than the sum of its proper divisors (1).

30513941 is an equidigital number, since it uses as much as digits as its factorization.

30513941 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 30513941 is about 5523.9425232347. The cubic root of 30513941 is about 312.4875847868.

The spelling of 30513941 in words is "thirty million, five hundred thirteen thousand, nine hundred forty-one".