20200221031 has 8 divisors (see below), whose sum is σ = 20519057664. Its totient is φ = 19883181240.

The previous prime is 20200221029. The next prime is 20200221101. The reversal of 20200221031 is 13012200202.

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 20200221031 - 2¹ = 20200221029 is a prime.

It is a super-2 number, since 2×20200221031² (a number of 21 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 (20200221001) 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 7 ways as a sum of consecutive naturals, for example, 426541 + ... + 471526.

It is an arithmetic number, because the mean of its divisors is an integer number (2564882208).

Almost surely, 2^20200221031 is an apocalyptic number.

20200221031 is a deficient number, since it is larger than the sum of its proper divisors (318836633).

20200221031 is an equidigital number, since it uses as much as digits as its factorization.

20200221031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 898421.

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 20200221031 its reverse (13012200202), we get a palindrome (33212421233).

The spelling of 20200221031 in words is "twenty billion, two hundred million, two hundred twenty-one thousand, thirty-one".