30700421 has 2 divisors, whose sum is σ = 30700422. Its totient is φ = 30700420.

The previous prime is 30700399. The next prime is 30700429. The reversal of 30700421 is 12400703.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27772900 + 2927521 = 5270^2 + 1711^2 .

It is a cyclic number.

It is not a de Polignac number, because 30700421 - 2¹⁰ = 30699397 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30700421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30700429) 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, 15350210 + 15350211.

It is an arithmetic number, because the mean of its divisors is an integer number (15350211).

Almost surely, 2^30700421 is an apocalyptic number.

It is an amenable number.

30700421 is a deficient number, since it is larger than the sum of its proper divisors (1).

30700421 is an equidigital number, since it uses as much as digits as its factorization.

30700421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 168, while the sum is 17.

The square root of 30700421 is about 5540.7960619391. The cubic root of 30700421 is about 313.1228613950.

The spelling of 30700421 in words is "thirty million, seven hundred thousand, four hundred twenty-one".