30994 has 4 divisors (see below), whose sum is σ = 46494. Its totient is φ = 15496.

The previous prime is 30983. The next prime is 31013. The reversal of 30994 is 49903.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 49903 = 7 ⋅7129.

It can be written as a sum of positive squares in only one way, i.e., 18225 + 12769 = 135^2 + 113^2 .

It is a nialpdrome in base 8.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7747 + ... + 7750.

2³⁰⁹⁹⁴ is an apocalyptic number.

30994 is a deficient number, since it is larger than the sum of its proper divisors (15500).

30994 is a wasteful number, since it uses less digits than its factorization.

30994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15499.

The product of its (nonzero) digits is 972, while the sum is 25.

The square root of 30994 is about 176.0511289370. The cubic root of 30994 is about 31.4117796960.

It can be divided in two parts, 30 and 994, that added together give a 10-th power (1024 = 2¹⁰).

The spelling of 30994 in words is "thirty thousand, nine hundred ninety-four".