431383578820 has 48 divisors (see below), whose sum is σ = 908607268800. Its totient is φ = 172039095936.

The previous prime is 431383578817. The next prime is 431383578859. The reversal of 431383578820 is 28875383134.

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, 33436731 + ... + 33449629.

It is an arithmetic number, because the mean of its divisors is an integer number (18929318100).

Almost surely, 2^431383578820 is an apocalyptic number.

It is an amenable number.

431383578820 is an abundant number, since it is smaller than the sum of its proper divisors (477223689980).

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

431383578820 is a wasteful number, since it uses less digits than its factorization.

431383578820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17764 (or 17762 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 52.

The spelling of 431383578820 in words is "four hundred thirty-one billion, three hundred eighty-three million, five hundred seventy-eight thousand, eight hundred twenty".