30196813 has 2 divisors, whose sum is σ = 30196814. Its totient is φ = 30196812.

The previous prime is 30196807. The next prime is 30196823. The reversal of 30196813 is 31869103.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20820969 + 9375844 = 4563^2 + 3062^2 .

It is a cyclic number.

It is not a de Polignac number, because 30196813 - 2⁵ = 30196781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30196823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15098406 + 15098407.

It is an arithmetic number, because the mean of its divisors is an integer number (15098407).

Almost surely, 2^30196813 is an apocalyptic number.

It is an amenable number.

30196813 is a deficient number, since it is larger than the sum of its proper divisors (1).

30196813 is an equidigital number, since it uses as much as digits as its factorization.

30196813 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 30196813 is about 5495.1626909492. The cubic root of 30196813 is about 311.4012631215.

The spelling of 30196813 in words is "thirty million, one hundred ninety-six thousand, eight hundred thirteen".