30993934 has 4 divisors (see below), whose sum is σ = 46490904. Its totient is φ = 15496966.

The previous prime is 30993931. The next prime is 30993947. The reversal of 30993934 is 43939903.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30993931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7748482 + ... + 7748485.

It is an arithmetic number, because the mean of its divisors is an integer number (11622726).

Almost surely, 2^30993934 is an apocalyptic number.

30993934 is a deficient number, since it is larger than the sum of its proper divisors (15496970).

30993934 is a wasteful number, since it uses less digits than its factorization.

30993934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15496969.

The product of its (nonzero) digits is 78732, while the sum is 40.

The square root of 30993934 is about 5567.2195932979. The cubic root of 30993934 is about 314.1175739939.

The spelling of 30993934 in words is "thirty million, nine hundred ninety-three thousand, nine hundred thirty-four".