31442201212 has 6 divisors (see below), whose sum is σ = 55023852128. Its totient is φ = 15721100604.

The previous prime is 31442201191. The next prime is 31442201227. The reversal of 31442201212 is 21210224413.

It is a super-2 number, since 2×31442201212² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3930275148 + ... + 3930275155.

Almost surely, 2^31442201212 is an apocalyptic number.

It is an amenable number.

31442201212 is a deficient number, since it is larger than the sum of its proper divisors (23581650916).

31442201212 is a wasteful number, since it uses less digits than its factorization.

31442201212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7860550307 (or 7860550305 counting only the distinct ones).

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

Adding to 31442201212 its reverse (21210224413), we get a palindrome (52652425625).

The spelling of 31442201212 in words is "thirty-one billion, four hundred forty-two million, two hundred one thousand, two hundred twelve".