3141021374581 has 4 divisors (see below), whose sum is σ = 3143602330092. Its totient is φ = 3138440419072.

The previous prime is 3141021374563. The next prime is 3141021374627. The reversal of 3141021374581 is 1854731201413.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1664332208100 + 1476689166481 = 1290090^2 + 1215191^2 .

It is a cyclic number.

It is not a de Polignac number, because 3141021374581 - 2³⁵ = 3106661636213 is a prime.

It is a super-2 number, since 2×3141021374581² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3141021374501) 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, 1290475930 + ... + 1290478363.

It is an arithmetic number, because the mean of its divisors is an integer number (785900582523).

Almost surely, 2^{3141021374581} is an apocalyptic number.

It is an amenable number.

3141021374581 is a deficient number, since it is larger than the sum of its proper divisors (2580955511).

3141021374581 is a wasteful number, since it uses less digits than its factorization.

3141021374581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2580955510.

The product of its (nonzero) digits is 80640, while the sum is 40.

Adding to 3141021374581 its reverse (1854731201413), we get a palindrome (4995752575994).

The spelling of 3141021374581 in words is "three trillion, one hundred forty-one billion, twenty-one million, three hundred seventy-four thousand, five hundred eighty-one".