320231404565061 has 16 divisors (see below), whose sum is σ = 486042922344960. Its totient is φ = 185641393950320.

The previous prime is 320231404565027. The next prime is 320231404565077. The reversal of 320231404565061 is 160565404132023.

It is not a de Polignac number, because 320231404565061 - 2⁹ = 320231404564549 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320231404564061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 210956128731 + ... + 210956130248.

It is an arithmetic number, because the mean of its divisors is an integer number (30377682646560).

Almost surely, 2^{320231404565061} is an apocalyptic number.

It is an amenable number.

320231404565061 is a deficient number, since it is larger than the sum of its proper divisors (165811517779899).

320231404565061 is a wasteful number, since it uses less digits than its factorization.

320231404565061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421912259016.

The product of its (nonzero) digits is 518400, while the sum is 42.

Adding to 320231404565061 its reverse (160565404132023), we get a palindrome (480796808697084).

The spelling of 320231404565061 in words is "three hundred twenty trillion, two hundred thirty-one billion, four hundred four million, five hundred sixty-five thousand, sixty-one".