202031221030311 has 32 divisors (see below), whose sum is σ = 277526524498432. Its totient is φ = 130654973030400.

The previous prime is 202031221030283. The next prime is 202031221030313. The reversal of 202031221030311 is 113030122130202.

It is not a de Polignac number, because 202031221030311 - 2⁵ = 202031221030279 is a prime.

It is a super-2 number, since 2×202031221030311² (a number of 29 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 (202031221030313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 86759631 + ... + 89057823.

It is an arithmetic number, because the mean of its divisors is an integer number (8672703890576).

Almost surely, 2^{202031221030311} is an apocalyptic number.

202031221030311 is a deficient number, since it is larger than the sum of its proper divisors (75495303468121).

202031221030311 is a wasteful number, since it uses less digits than its factorization.

202031221030311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2302903.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 202031221030311 its reverse (113030122130202), we get a palindrome (315061343160513).

The spelling of 202031221030311 in words is "two hundred two trillion, thirty-one billion, two hundred twenty-one million, thirty thousand, three hundred eleven".