231020654645 has 16 divisors (see below), whose sum is σ = 303759332928. Its totient is φ = 167274858240.

The previous prime is 231020654581. The next prime is 231020654651. The reversal of 231020654645 is 546456020132.

It is not a de Polignac number, because 231020654645 - 2⁶ = 231020654581 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231020654599 and 231020654608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9239444 + ... + 9264413.

It is an arithmetic number, because the mean of its divisors is an integer number (18984958308).

Almost surely, 2^231020654645 is an apocalyptic number.

It is an amenable number.

231020654645 is a deficient number, since it is larger than the sum of its proper divisors (72738678283).

231020654645 is a wasteful number, since it uses less digits than its factorization.

231020654645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18504100.

The product of its (nonzero) digits is 172800, while the sum is 38.

Adding to 231020654645 its reverse (546456020132), we get a palindrome (777476674777).

The spelling of 231020654645 in words is "two hundred thirty-one billion, twenty million, six hundred fifty-four thousand, six hundred forty-five".