202031211442 has 24 divisors (see below), whose sum is σ = 313925328756. Its totient is φ = 97511092224.

The previous prime is 202031211427. The next prime is 202031211509. The reversal of 202031211442 is 244112130202.

It can be written as a sum of positive squares in 6 ways, for example, as 57517949241 + 144513262201 = 239829^2 + 380149^2 .

It is a super-2 number, since 2×202031211442² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10002858 + ... + 10023034.

Almost surely, 2^202031211442 is an apocalyptic number.

202031211442 is a deficient number, since it is larger than the sum of its proper divisors (111894117314).

202031211442 is a wasteful number, since it uses less digits than its factorization.

202031211442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26190 (or 26161 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 202031211442 its reverse (244112130202), we get a palindrome (446143341644).

The spelling of 202031211442 in words is "two hundred two billion, thirty-one million, two hundred eleven thousand, four hundred forty-two".