30275813 has 2 divisors, whose sum is σ = 30275814. Its totient is φ = 30275812.

The previous prime is 30275789. The next prime is 30275821. The reversal of 30275813 is 31857203.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28376929 + 1898884 = 5327^2 + 1378^2 .

It is a cyclic number.

It is not a de Polignac number, because 30275813 - 2¹⁴ = 30259429 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30275863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15137906 + 15137907.

It is an arithmetic number, because the mean of its divisors is an integer number (15137907).

Almost surely, 2^30275813 is an apocalyptic number.

It is an amenable number.

30275813 is a deficient number, since it is larger than the sum of its proper divisors (1).

30275813 is an equidigital number, since it uses as much as digits as its factorization.

30275813 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 30275813 is about 5502.3461359678. The cubic root of 30275813 is about 311.6725862101.

The spelling of 30275813 in words is "thirty million, two hundred seventy-five thousand, eight hundred thirteen".