202120200230031 has 56 divisors (see below), whose sum is σ = 322306525457280. Its totient is φ = 126251814191616.

The previous prime is 202120200230021. The next prime is 202120200230057. The reversal of 202120200230031 is 130032002021202.

202120200230031 is a `hidden beast` number, since 20 + 212 + 0 + 200 + 230 + 0 + 3 + 1 = 666.

It is not a de Polignac number, because 202120200230031 - 2²⁶ = 202120133121167 is a prime.

It is a super-2 number, since 2×202120200230031² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 202120200229986 and 202120200230013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202120200230021) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 33804126 + ... + 39331403.

It is an arithmetic number, because the mean of its divisors is an integer number (5755473668880).

Almost surely, 2^{202120200230031} is an apocalyptic number.

202120200230031 is a deficient number, since it is larger than the sum of its proper divisors (120186325227249).

202120200230031 is an equidigital number, since it uses as much as digits as its factorization.

202120200230031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73135787 (or 73135772 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 202120200230031 its reverse (130032002021202), we get a palindrome (332152202251233).

The spelling of 202120200230031 in words is "two hundred two trillion, one hundred twenty billion, two hundred million, two hundred thirty thousand, thirty-one".