3121141321 has 2 divisors, whose sum is σ = 3121141322. Its totient is φ = 3121141320.

The previous prime is 3121141313. The next prime is 3121141337. The reversal of 3121141321 is 1231411213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3021041296 + 100100025 = 54964^2 + 10005^2 .

It is a cyclic number.

It is not a de Polignac number, because 3121141321 - 2³ = 3121141313 is a prime.

It is not a weakly prime, because it can be changed into another prime (3121141301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1560570660 + 1560570661.

It is an arithmetic number, because the mean of its divisors is an integer number (1560570661).

Almost surely, 2^3121141321 is an apocalyptic number.

It is an amenable number.

3121141321 is a deficient number, since it is larger than the sum of its proper divisors (1).

3121141321 is an equidigital number, since it uses as much as digits as its factorization.

3121141321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 144, while the sum is 19.

The square root of 3121141321 is about 55867.1757027326. The cubic root of 3121141321 is about 1461.4068694817.

Adding to 3121141321 its reverse (1231411213), we get a palindrome (4352552534).

The spelling of 3121141321 in words is "three billion, one hundred twenty-one million, one hundred forty-one thousand, three hundred twenty-one".