3140321 has 2 divisors, whose sum is σ = 3140322. Its totient is φ = 3140320.

The previous prime is 3140317. The next prime is 3140353. The reversal of 3140321 is 1230413.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2310400 + 829921 = 1520^2 + 911^2 .

It is a cyclic number.

It is not a de Polignac number, because 3140321 - 2² = 3140317 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 3140296 and 3140305.

It is not a weakly prime, because it can be changed into another prime (3140821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1570160 + 1570161.

It is an arithmetic number, because the mean of its divisors is an integer number (1570161).

Almost surely, 2^3140321 is an apocalyptic number.

It is an amenable number.

3140321 is a deficient number, since it is larger than the sum of its proper divisors (1).

3140321 is an equidigital number, since it uses as much as digits as its factorization.

3140321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 3140321 is about 1772.0950877422. The cubic root of 3140321 is about 146.4394248435.

Adding to 3140321 its reverse (1230413), we get a palindrome (4370734).

The spelling of 3140321 in words is "three million, one hundred forty thousand, three hundred twenty-one".