20200220231 has 4 divisors (see below), whose sum is σ = 20347667232. Its totient is φ = 20052773232.

The previous prime is 20200220213. The next prime is 20200220239. The reversal of 20200220231 is 13202200202.

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

It is a cyclic number.

It is not a de Polignac number, because 20200220231 - 2²⁶ = 20133111367 is a prime.

It is a super-2 number, since 2×20200220231² (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 (20200220239) 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, 73723295 + ... + 73723568.

It is an arithmetic number, because the mean of its divisors is an integer number (5086916808).

Almost surely, 2^20200220231 is an apocalyptic number.

20200220231 is a deficient number, since it is larger than the sum of its proper divisors (147447001).

20200220231 is a wasteful number, since it uses less digits than its factorization.

20200220231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147447000.

The product of its (nonzero) digits is 96, while the sum is 14.

Adding to 20200220231 its reverse (13202200202), we get a palindrome (33402420433).

The spelling of 20200220231 in words is "twenty billion, two hundred million, two hundred twenty thousand, two hundred thirty-one".