431313320020 has 48 divisors (see below), whose sum is σ = 988181990208. Its totient is φ = 156828130560.

The previous prime is 431313320017. The next prime is 431313320021. The reversal of 431313320020 is 20023313134.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 431313319973 and 431313320000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431313320021) 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, 2792047 + ... + 2942473.

It is an arithmetic number, because the mean of its divisors is an integer number (20587124796).

Almost surely, 2^431313320020 is an apocalyptic number.

It is an amenable number.

431313320020 is an abundant number, since it is smaller than the sum of its proper divisors (556868670188).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

431313320020 is a wasteful number, since it uses less digits than its factorization.

431313320020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163480 (or 163478 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 431313320020 its reverse (20023313134), we get a palindrome (451336633154).

The spelling of 431313320020 in words is "four hundred thirty-one billion, three hundred thirteen million, three hundred twenty thousand, twenty".