231218056945 has 8 divisors (see below), whose sum is σ = 283914265536. Its totient is φ = 180672714096.

The previous prime is 231218056933. The next prime is 231218056967. The reversal of 231218056945 is 549650812132.

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

It is a cyclic number.

It is not a de Polignac number, because 231218056945 - 2³⁵ = 196858318577 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231218056895 and 231218056904.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 537716197 + ... + 537716626.

It is an arithmetic number, because the mean of its divisors is an integer number (35489283192).

Almost surely, 2^231218056945 is an apocalyptic number.

It is an amenable number.

231218056945 is a deficient number, since it is larger than the sum of its proper divisors (52696208591).

231218056945 is a wasteful number, since it uses less digits than its factorization.

231218056945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1075432871.

The product of its (nonzero) digits is 518400, while the sum is 46.

The spelling of 231218056945 in words is "two hundred thirty-one billion, two hundred eighteen million, fifty-six thousand, nine hundred forty-five".