30149213 has 4 divisors (see below), whose sum is σ = 30203328. Its totient is φ = 30095100.

The previous prime is 30149201. The next prime is 30149221. The reversal of 30149213 is 31294103.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31294103 = 29 ⋅1079107.

It is a cyclic number.

It is not a de Polignac number, because 30149213 - 2¹⁰ = 30148189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30149293) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26213 + ... + 27338.

It is an arithmetic number, because the mean of its divisors is an integer number (7550832).

Almost surely, 2^30149213 is an apocalyptic number.

It is an amenable number.

30149213 is a deficient number, since it is larger than the sum of its proper divisors (54115).

30149213 is an equidigital number, since it uses as much as digits as its factorization.

30149213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54114.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 30149213 is about 5490.8299008438. The cubic root of 30149213 is about 311.2375538428.

The spelling of 30149213 in words is "thirty million, one hundred forty-nine thousand, two hundred thirteen".