231322582785 has 64 divisors (see below), whose sum is σ = 424785715200. Its totient is φ = 105299212032.

The previous prime is 231322582781. The next prime is 231322582811. The reversal of 231322582785 is 587285223132.

It is a happy number.

It is not a de Polignac number, because 231322582785 - 2² = 231322582781 is a prime.

It is a super-3 number, since 3×231322582785³ (a number of 35 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (231322582781) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 39613896 + ... + 39619734.

It is an arithmetic number, because the mean of its divisors is an integer number (6637276800).

Almost surely, 2^231322582785 is an apocalyptic number.

It is an amenable number.

231322582785 is a deficient number, since it is larger than the sum of its proper divisors (193463132415).

231322582785 is a wasteful number, since it uses less digits than its factorization.

231322582785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7390.

The product of its digits is 1612800, while the sum is 48.

The spelling of 231322582785 in words is "two hundred thirty-one billion, three hundred twenty-two million, five hundred eighty-two thousand, seven hundred eighty-five".