320212031 has 2 divisors, whose sum is σ = 320212032. Its totient is φ = 320212030.

The previous prime is 320212001. The next prime is 320212063. The reversal of 320212031 is 130212023.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 320212031 - 2⁶ = 320211967 is a prime.

It is a super-2 number, since 2×320212031² = 205071489594289922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 320211997 and 320212015.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320212001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160106015 + 160106016.

It is an arithmetic number, because the mean of its divisors is an integer number (160106016).

Almost surely, 2^320212031 is an apocalyptic number.

320212031 is a deficient number, since it is larger than the sum of its proper divisors (1).

320212031 is an equidigital number, since it uses as much as digits as its factorization.

320212031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 320212031 is about 17894.4692852289. The cubic root of 320212031 is about 684.1414152793.

Adding to 320212031 its reverse (130212023), we get a palindrome (450424054).

The spelling of 320212031 in words is "three hundred twenty million, two hundred twelve thousand, thirty-one".