4131321 has 4 divisors (see below), whose sum is σ = 5508432. Its totient is φ = 2754212.

The previous prime is 4131317. The next prime is 4131331. The reversal of 4131321 is 1231314.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4131321 - 2² = 4131317 is a prime.

It is a D-number.

It is a self number, because there is not a number n which added to its sum of digits gives 4131321.

It is not an unprimeable number, because it can be changed into a prime (4131301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 688551 + ... + 688556.

It is an arithmetic number, because the mean of its divisors is an integer number (1377108).

Almost surely, 2^4131321 is an apocalyptic number.

It is an amenable number.

4131321 is a deficient number, since it is larger than the sum of its proper divisors (1377111).

4131321 is a wasteful number, since it uses less digits than its factorization.

4131321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1377110.

The product of its digits is 72, while the sum is 15.

The square root of 4131321 is about 2032.5651281078. The cubic root of 4131321 is about 160.4585931752.

Adding to 4131321 its reverse (1231314), we get a palindrome (5362635).

The spelling of 4131321 in words is "four million, one hundred thirty-one thousand, three hundred twenty-one".