231289345 has 16 divisors (see below), whose sum is σ = 317940480. Its totient is φ = 158226624.

The previous prime is 231289319. The next prime is 231289351. The reversal of 231289345 is 543982132.

It is a cyclic number.

It is not a de Polignac number, because 231289345 - 2¹¹ = 231287297 is a prime.

It is a super-2 number, since 2×231289345² = 106989522221058050, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7839 + ... + 22891.

It is an arithmetic number, because the mean of its divisors is an integer number (19871280).

Almost surely, 2^231289345 is an apocalyptic number.

It is an amenable number.

231289345 is a deficient number, since it is larger than the sum of its proper divisors (86651135).

231289345 is a wasteful number, since it uses less digits than its factorization.

231289345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15504.

The product of its digits is 51840, while the sum is 37.

The square root of 231289345 is about 15208.1999263555. The cubic root of 231289345 is about 613.8353219057.

The spelling of 231289345 in words is "two hundred thirty-one million, two hundred eighty-nine thousand, three hundred forty-five".