231264385 has 8 divisors (see below), whose sum is σ = 302746176. Its totient is φ = 168192240.

The previous prime is 231264353. The next prime is 231264389. The reversal of 231264385 is 583462132.

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

It is not a de Polignac number, because 231264385 - 2⁵ = 231264353 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 231264385.

It is not an unprimeable number, because it can be changed into a prime (231264389) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2102349 + ... + 2102458.

It is an arithmetic number, because the mean of its divisors is an integer number (37843272).

Almost surely, 2^231264385 is an apocalyptic number.

It is an amenable number.

231264385 is a deficient number, since it is larger than the sum of its proper divisors (71481791).

231264385 is a wasteful number, since it uses less digits than its factorization.

231264385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4204823.

The product of its digits is 34560, while the sum is 34.

The square root of 231264385 is about 15207.3792942768. The cubic root of 231264385 is about 613.8132400688.

The spelling of 231264385 in words is "two hundred thirty-one million, two hundred sixty-four thousand, three hundred eighty-five".