2401321 has 8 divisors (see below), whose sum is σ = 2603720. Its totient is φ = 2214576.

The previous prime is 2401307. The next prime is 2401339. The reversal of 2401321 is 1231042.

It can be written as a sum of positive squares in 4 ways, for example, as 151321 + 2250000 = 389^2 + 1500^2 .

It is not a de Polignac number, because 2401321 - 2¹¹ = 2399273 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is a nialpdrome in base 13.

It is a zygodrome in base 3.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2401381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1651 + ... + 2743.

It is an arithmetic number, because the mean of its divisors is an integer number (325465).

2^2401321 is an apocalyptic number.

It is an amenable number.

2401321 is a deficient number, since it is larger than the sum of its proper divisors (202399).

2401321 is an equidigital number, since it uses as much as digits as its factorization.

2401321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1132 (or 1106 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 2401321 is about 1549.6196307481. The cubic root of 2401321 is about 133.9111499811.

Adding to 2401321 its reverse (1231042), we get a palindrome (3632363).

The spelling of 2401321 in words is "two million, four hundred one thousand, three hundred twenty-one".