30700213 has 2 divisors, whose sum is σ = 30700214. Its totient is φ = 30700212.

The previous prime is 30700171. The next prime is 30700217. The reversal of 30700213 is 31200703.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18464209 + 12236004 = 4297^2 + 3498^2 .

It is a cyclic number.

It is not a de Polignac number, because 30700213 - 2⁹ = 30699701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30700217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15350106 + 15350107.

It is an arithmetic number, because the mean of its divisors is an integer number (15350107).

Almost surely, 2^30700213 is an apocalyptic number.

It is an amenable number.

30700213 is a deficient number, since it is larger than the sum of its proper divisors (1).

30700213 is an equidigital number, since it uses as much as digits as its factorization.

30700213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 126, while the sum is 16.

The square root of 30700213 is about 5540.7772920413. Note that the first 3 decimals coincide. The cubic root of 30700213 is about 313.1221542418.

Adding to 30700213 its reverse (31200703), we get a palindrome (61900916).

The spelling of 30700213 in words is "thirty million, seven hundred thousand, two hundred thirteen".