31442140012 has 18 divisors (see below), whose sum is σ = 55694717708. Its totient is φ = 15531645912.

The previous prime is 31442140003. The next prime is 31442140027. The reversal of 31442140012 is 21004124413.

It is a happy number.

It is a super-2 number, since 2×31442140012² (a number of 22 digits) contains 22 as substring.

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 in 5 ways as a sum of consecutive naturals, for example, 542958 + ... + 598069.

Almost surely, 2^31442140012 is an apocalyptic number.

It is an amenable number.

31442140012 is a deficient number, since it is larger than the sum of its proper divisors (24252577696).

31442140012 is a wasteful number, since it uses less digits than its factorization.

31442140012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1141197 (or 1141112 counting only the distinct ones).

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

Adding to 31442140012 its reverse (21004124413), we get a palindrome (52446264425).

The spelling of 31442140012 in words is "thirty-one billion, four hundred forty-two million, one hundred forty thousand, twelve".