320131214021 has 2 divisors, whose sum is σ = 320131214022. Its totient is φ = 320131214020.

The previous prime is 320131214003. The next prime is 320131214027. The reversal of 320131214021 is 120412131023.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 215342402500 + 104788811521 = 464050^2 + 323711^2 .

It is a cyclic number.

It is not a de Polignac number, because 320131214021 - 2¹⁰ = 320131212997 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 320131213984 and 320131214002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320131214027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160065607010 + 160065607011.

It is an arithmetic number, because the mean of its divisors is an integer number (160065607011).

Almost surely, 2^320131214021 is an apocalyptic number.

It is an amenable number.

320131214021 is a deficient number, since it is larger than the sum of its proper divisors (1).

320131214021 is an equidigital number, since it uses as much as digits as its factorization.

320131214021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 320131214021 its reverse (120412131023), we get a palindrome (440543345044).

The spelling of 320131214021 in words is "three hundred twenty billion, one hundred thirty-one million, two hundred fourteen thousand, twenty-one".