320031444413 has 2 divisors, whose sum is σ = 320031444414. Its totient is φ = 320031444412.

The previous prime is 320031444401. The next prime is 320031444431. The reversal of 320031444413 is 314444130023.

It is a happy number.

Together with next prime (320031444431) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 235921004089 + 84110440324 = 485717^2 + 290018^2 .

It is a cyclic number.

It is not a de Polignac number, because 320031444413 - 2¹⁸ = 320031182269 is a prime.

It is a super-2 number, since 2×320031444413² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320031444013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160015722206 + 160015722207.

It is an arithmetic number, because the mean of its divisors is an integer number (160015722207).

Almost surely, 2^320031444413 is an apocalyptic number.

It is an amenable number.

320031444413 is a deficient number, since it is larger than the sum of its proper divisors (1).

320031444413 is an equidigital number, since it uses as much as digits as its factorization.

320031444413 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 320031444413 its reverse (314444130023), we get a palindrome (634475574436).

The spelling of 320031444413 in words is "three hundred twenty billion, thirty-one million, four hundred forty-four thousand, four hundred thirteen".