31442240132 has 12 divisors (see below), whose sum is σ = 55040383440. Its totient is φ = 15716416296.

The previous prime is 31442240113. The next prime is 31442240143. The reversal of 31442240132 is 23104224413.

It is a super-2 number, since 2×31442240132² (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 (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1160882 + ... + 1187657.

It is an arithmetic number, because the mean of its divisors is an integer number (4586698620).

Almost surely, 2^31442240132 is an apocalyptic number.

It is an amenable number.

31442240132 is a deficient number, since it is larger than the sum of its proper divisors (23598143308).

31442240132 is a wasteful number, since it uses less digits than its factorization.

31442240132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2351890 (or 2351888 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 31442240132 its reverse (23104224413), we get a palindrome (54546464545).

The spelling of 31442240132 in words is "thirty-one billion, four hundred forty-two million, two hundred forty thousand, one hundred thirty-two".