320111343437 has 2 divisors, whose sum is σ = 320111343438. Its totient is φ = 320111343436.

The previous prime is 320111343329. The next prime is 320111343443. The reversal of 320111343437 is 734343111023.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 300710753641 + 19400589796 = 548371^2 + 139286^2 .

It is a cyclic number.

It is not a de Polignac number, because 320111343437 - 2²⁸ = 319842907981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320111343467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160055671718 + 160055671719.

It is an arithmetic number, because the mean of its divisors is an integer number (160055671719).

Almost surely, 2^320111343437 is an apocalyptic number.

It is an amenable number.

320111343437 is a deficient number, since it is larger than the sum of its proper divisors (1).

320111343437 is an equidigital number, since it uses as much as digits as its factorization.

320111343437 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 32.

The spelling of 320111343437 in words is "three hundred twenty billion, one hundred eleven million, three hundred forty-three thousand, four hundred thirty-seven".