30898213 has 2 divisors, whose sum is σ = 30898214. Its totient is φ = 30898212.

The previous prime is 30898193. The next prime is 30898229. The reversal of 30898213 is 31289803.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29778849 + 1119364 = 5457^2 + 1058^2 .

It is a cyclic number.

It is not a de Polignac number, because 30898213 - 2⁵ = 30898181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30898013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15449106 + 15449107.

It is an arithmetic number, because the mean of its divisors is an integer number (15449107).

Almost surely, 2^30898213 is an apocalyptic number.

It is an amenable number.

30898213 is a deficient number, since it is larger than the sum of its proper divisors (1).

30898213 is an equidigital number, since it uses as much as digits as its factorization.

30898213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 30898213 is about 5558.6161047513. The cubic root of 30898213 is about 313.7938692011.

The spelling of 30898213 in words is "thirty million, eight hundred ninety-eight thousand, two hundred thirteen".