320040120413 has 4 divisors (see below), whose sum is σ = 344658591228. Its totient is φ = 295421649600.

The previous prime is 320040120377. The next prime is 320040120427. The reversal of 320040120413 is 314021040023.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 314021040023 = 491 ⋅639554053.

It can be written as a sum of positive squares in 2 ways, for example, as 152036046724 + 168004073689 = 389918^2 + 409883^2 .

It is a cyclic number.

It is not a de Polignac number, because 320040120413 - 2⁶ = 320040120349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320040120713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12309235388 + ... + 12309235413.

It is an arithmetic number, because the mean of its divisors is an integer number (86164647807).

Almost surely, 2^320040120413 is an apocalyptic number.

It is an amenable number.

320040120413 is a deficient number, since it is larger than the sum of its proper divisors (24618470815).

320040120413 is a wasteful number, since it uses less digits than its factorization.

320040120413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24618470814.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 320040120413 its reverse (314021040023), we get a palindrome (634061160436).

The spelling of 320040120413 in words is "three hundred twenty billion, forty million, one hundred twenty thousand, four hundred thirteen".