231054321 has 16 divisors (see below), whose sum is σ = 312609024. Its totient is φ = 151778064.

The previous prime is 231054301. The next prime is 231054331. The reversal of 231054321 is 123450132.

It is not a de Polignac number, because 231054321 - 2²³ = 222665713 is a prime.

It is not an unprimeable number, because it can be changed into a prime (231054301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 115290 + ... + 117276.

It is an arithmetic number, because the mean of its divisors is an integer number (19538064).

Almost surely, 2^231054321 is an apocalyptic number.

It is an amenable number.

231054321 is a deficient number, since it is larger than the sum of its proper divisors (81554703).

231054321 is a wasteful number, since it uses less digits than its factorization.

231054321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2540.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 231054321 is about 15200.4710782265. The cubic root of 231054321 is about 613.6273357784.

The spelling of 231054321 in words is "two hundred thirty-one million, fifty-four thousand, three hundred twenty-one".