320113230252421 has 16 divisors (see below), whose sum is σ = 323135545590000. Its totient is φ = 317092482072576.

The previous prime is 320113230252401. The next prime is 320113230252461. The reversal of 320113230252421 is 124252032311023.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 5855001323521 + 314258228928900 = 2419711^2 + 17727330^2 .

It is a cyclic number.

It is not a de Polignac number, because 320113230252421 - 2⁷ = 320113230252293 is a prime.

It is a super-2 number, since 2×320113230252421² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320113230252401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7671220485 + ... + 7671262213.

It is an arithmetic number, because the mean of its divisors is an integer number (20195971599375).

Almost surely, 2^{320113230252421} is an apocalyptic number.

It is an amenable number.

320113230252421 is a deficient number, since it is larger than the sum of its proper divisors (3022315337579).

320113230252421 is a wasteful number, since it uses less digits than its factorization.

320113230252421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58776.

The product of its (nonzero) digits is 17280, while the sum is 31.

Adding to 320113230252421 its reverse (124252032311023), we get a palindrome (444365262563444).

The spelling of 320113230252421 in words is "three hundred twenty trillion, one hundred thirteen billion, two hundred thirty million, two hundred fifty-two thousand, four hundred twenty-one".