20441531213 has 8 divisors (see below), whose sum is σ = 20603220000. Its totient is φ = 20279928240.

The previous prime is 20441531203. The next prime is 20441531219. The reversal of 20441531213 is 31213514402.

It is a happy number.

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 20441531213 - 2⁸ = 20441530957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20441531219) 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, 508163 + ... + 546911.

It is an arithmetic number, because the mean of its divisors is an integer number (2575402500).

Almost surely, 2^20441531213 is an apocalyptic number.

It is an amenable number.

20441531213 is a deficient number, since it is larger than the sum of its proper divisors (161688787).

20441531213 is a wasteful number, since it uses less digits than its factorization.

20441531213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42907.

The product of its (nonzero) digits is 2880, while the sum is 26.

The spelling of 20441531213 in words is "twenty billion, four hundred forty-one million, five hundred thirty-one thousand, two hundred thirteen".