31141330221 has 8 divisors (see below), whose sum is σ = 41524878240. Its totient is φ = 20759334512.

The previous prime is 31141330219. The next prime is 31141330229. The reversal of 31141330221 is 12203314113.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31141330221 - 2¹ = 31141330219 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31141330229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 340431 + ... + 422108.

It is an arithmetic number, because the mean of its divisors is an integer number (5190609780).

Almost surely, 2^31141330221 is an apocalyptic number.

It is an amenable number.

31141330221 is a deficient number, since it is larger than the sum of its proper divisors (10383548019).

31141330221 is a wasteful number, since it uses less digits than its factorization.

31141330221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 776155.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 31141330221 its reverse (12203314113), we get a palindrome (43344644334).

The spelling of 31141330221 in words is "thirty-one billion, one hundred forty-one million, three hundred thirty thousand, two hundred twenty-one".