3141540221 has 2 divisors, whose sum is σ = 3141540222. Its totient is φ = 3141540220.

The previous prime is 3141540163. The next prime is 3141540247. The reversal of 3141540221 is 1220451413.

3141540221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2479044100 + 662496121 = 49790^2 + 25739^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3141540221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3141545221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1570770110 + 1570770111.

It is an arithmetic number, because the mean of its divisors is an integer number (1570770111).

Almost surely, 2^3141540221 is an apocalyptic number.

It is an amenable number.

3141540221 is a deficient number, since it is larger than the sum of its proper divisors (1).

3141540221 is an equidigital number, since it uses as much as digits as its factorization.

3141540221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 3141540221 is about 56049.4444307881. Note that the first 4 decimals coincide. The cubic root of 3141540221 is about 1464.5837395953.

Adding to 3141540221 its reverse (1220451413), we get a palindrome (4361991634).

The spelling of 3141540221 in words is "three billion, one hundred forty-one million, five hundred forty thousand, two hundred twenty-one".