30936213 has 24 divisors (see below), whose sum is σ = 55713216. Its totient is φ = 16070400.

The previous prime is 30936203. The next prime is 30936223. The reversal of 30936213 is 31263903.

30936213 is a `hidden beast` number, since 30 + 9 + 3 + 621 + 3 = 666.

It is an interprime number because it is at equal distance from previous prime (30936203) and next prime (30936223).

It is not a de Polignac number, because 30936213 - 2⁴ = 30936197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30936203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21628 + ... + 23013.

It is an arithmetic number, because the mean of its divisors is an integer number (2321384).

Almost surely, 2^30936213 is an apocalyptic number.

30936213 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

It is an amenable number.

30936213 is a deficient number, since it is larger than the sum of its proper divisors (24777003).

30936213 is a wasteful number, since it uses less digits than its factorization.

30936213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44665 (or 44662 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 27.

The square root of 30936213 is about 5562.0331714221. The cubic root of 30936213 is about 313.9224557322.

The spelling of 30936213 in words is "thirty million, nine hundred thirty-six thousand, two hundred thirteen".