231280330 has 16 divisors (see below), whose sum is σ = 421321824. Its totient is φ = 91397200.

The previous prime is 231280327. The next prime is 231280337. The reversal of 231280330 is 33082132.

It is a happy number.

231280330 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (231280337) 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, 138496 + ... + 140155.

It is an arithmetic number, because the mean of its divisors is an integer number (26332614).

Almost surely, 2^231280330 is an apocalyptic number.

231280330 is a deficient number, since it is larger than the sum of its proper divisors (190041494).

231280330 is a wasteful number, since it uses less digits than its factorization.

231280330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278741.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 231280330 is about 15207.9035373059. The cubic root of 231280330 is about 613.8273466178.

The spelling of 231280330 in words is "two hundred thirty-one million, two hundred eighty thousand, three hundred thirty".