20100531441 has 4 divisors (see below), whose sum is σ = 26800708592. Its totient is φ = 13400354292.

The previous prime is 20100531431. The next prime is 20100531443. The reversal of 20100531441 is 14413500102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 20100531441 - 2¹⁸ = 20100269297 is a prime.

It is a super-3 number, since 3×20100531441³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20100531443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3350088571 + ... + 3350088576.

It is an arithmetic number, because the mean of its divisors is an integer number (6700177148).

Almost surely, 2^20100531441 is an apocalyptic number.

It is an amenable number.

20100531441 is a deficient number, since it is larger than the sum of its proper divisors (6700177151).

20100531441 is an equidigital number, since it uses as much as digits as its factorization.

20100531441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6700177150.

The product of its (nonzero) digits is 480, while the sum is 21.

The spelling of 20100531441 in words is "twenty billion, one hundred million, five hundred thirty-one thousand, four hundred forty-one".