30940231 has 8 divisors (see below), whose sum is σ = 35396640. Its totient is φ = 26492928.

The previous prime is 30940213. The next prime is 30940243. The reversal of 30940231 is 13204903.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 30940231 - 2⁹ = 30939719 is a prime.

It is a super-2 number, since 2×30940231² = 1914595788666722, 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 (30940211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8295 + ... + 11431.

It is an arithmetic number, because the mean of its divisors is an integer number (4424580).

Almost surely, 2^30940231 is an apocalyptic number.

30940231 is a deficient number, since it is larger than the sum of its proper divisors (4456409).

30940231 is a wasteful number, since it uses less digits than its factorization.

30940231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4553.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 30940231 is about 5562.3943585474. The cubic root of 30940231 is about 313.9360459091.

The spelling of 30940231 in words is "thirty million, nine hundred forty thousand, two hundred thirty-one".