320431668053 has 12 divisors (see below), whose sum is σ = 374197434732. Its totient is φ = 273587005440.

The previous prime is 320431668049. The next prime is 320431668071. The reversal of 320431668053 is 350866134023.

It can be written as a sum of positive squares in 2 ways, for example, as 183340681489 + 137090986564 = 428183^2 + 370258^2 .

It is not a de Polignac number, because 320431668053 - 2² = 320431668049 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 320431668053.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320431664053) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12710018 + ... + 12735203.

It is an arithmetic number, because the mean of its divisors is an integer number (31183119561).

Almost surely, 2^320431668053 is an apocalyptic number.

It is an amenable number.

320431668053 is a deficient number, since it is larger than the sum of its proper divisors (53765766679).

320431668053 is a wasteful number, since it uses less digits than its factorization.

320431668053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25445492 (or 25445485 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 41.

The spelling of 320431668053 in words is "three hundred twenty billion, four hundred thirty-one million, six hundred sixty-eight thousand, fifty-three".