30894231 has 4 divisors (see below), whose sum is σ = 41192312. Its totient is φ = 20596152.

The previous prime is 30894187. The next prime is 30894233. The reversal of 30894231 is 13249803.

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

It is not a de Polignac number, because 30894231 - 2⁷ = 30894103 is a prime.

It is a super-2 number, since 2×30894231² = 1908907018162722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30894233) 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, 5149036 + ... + 5149041.

It is an arithmetic number, because the mean of its divisors is an integer number (10298078).

Almost surely, 2^30894231 is an apocalyptic number.

30894231 is a deficient number, since it is larger than the sum of its proper divisors (10298081).

30894231 is a wasteful number, since it uses less digits than its factorization.

30894231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10298080.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 30894231 is about 5558.2579105328. The cubic root of 30894231 is about 313.7803885848.

It can be divided in two parts, 30894 and 231, that added together give a triangular number (31125 = T₂₄₉).

The spelling of 30894231 in words is "thirty million, eight hundred ninety-four thousand, two hundred thirty-one".