320430201988 has 24 divisors (see below), whose sum is σ = 604000317312. Its totient is φ = 147863279904.

The previous prime is 320430201979. The next prime is 320430201989. The reversal of 320430201988 is 889102034023.

It is a self number, because there is not a number n which added to its sum of digits gives 320430201988.

It is not an unprimeable number, because it can be changed into a prime (320430201989) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 291820 + ... + 852067.

It is an arithmetic number, because the mean of its divisors is an integer number (25166679888).

Almost surely, 2^320430201988 is an apocalyptic number.

It is an amenable number.

320430201988 is a deficient number, since it is larger than the sum of its proper divisors (283570115324).

320430201988 is a wasteful number, since it uses less digits than its factorization.

320430201988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1149291 (or 1149289 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 40.

The spelling of 320430201988 in words is "three hundred twenty billion, four hundred thirty million, two hundred one thousand, nine hundred eighty-eight".