320131204421 has 32 divisors (see below), whose sum is σ = 400156416000. Its totient is φ = 249885784512.

The previous prime is 320131204409. The next prime is 320131204451. The reversal of 320131204421 is 124402131023.

It is not a de Polignac number, because 320131204421 - 2⁶ = 320131204357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320131204451) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 692720 + ... + 1058358.

It is an arithmetic number, because the mean of its divisors is an integer number (12504888000).

Almost surely, 2^320131204421 is an apocalyptic number.

It is an amenable number.

320131204421 is a deficient number, since it is larger than the sum of its proper divisors (80025211579).

320131204421 is a wasteful number, since it uses less digits than its factorization.

320131204421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365921.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 320131204421 its reverse (124402131023), we get a palindrome (444533335444).

The spelling of 320131204421 in words is "three hundred twenty billion, one hundred thirty-one million, two hundred four thousand, four hundred twenty-one".