30838013 has 4 divisors (see below), whose sum is σ = 31080960. Its totient is φ = 30595068.

The previous prime is 30837977. The next prime is 30838019. The reversal of 30838013 is 31083803.

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.

It is a cyclic number.

It is not a de Polignac number, because 30838013 - 2¹² = 30833917 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 (30838019) 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, 121283 + ... + 121536.

It is an arithmetic number, because the mean of its divisors is an integer number (7770240).

Almost surely, 2^30838013 is an apocalyptic number.

It is an amenable number.

30838013 is a deficient number, since it is larger than the sum of its proper divisors (242947).

30838013 is a wasteful number, since it uses less digits than its factorization.

30838013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242946.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 30838013 is about 5553.1984477416. The cubic root of 30838013 is about 313.5899450834.

The spelling of 30838013 in words is "thirty million, eight hundred thirty-eight thousand, thirteen".