31321212484 has 27 divisors (see below), whose sum is σ = 55396156543. Its totient is φ = 15495485768.

The previous prime is 31321212431. The next prime is 31321212497. The reversal of 31321212484 is 48421212313.

It is a happy number.

The square root of 31321212484 is 176978.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 37872879 + ... + 37873705.

Almost surely, 2^31321212484 is an apocalyptic number.

31321212484 is the 176978-th square number.

It is an amenable number.

31321212484 is a deficient number, since it is larger than the sum of its proper divisors (24074944059).

31321212484 is an frugal number, since it uses more digits than its factorization.

31321212484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1872 (or 936 counting only the distinct ones).

The product of its digits is 9216, while the sum is 31.

Multiplying 31321212484 by its product of digits (9216), we get a square (288656294252544 = 16989888²).

Adding to 31321212484 its reverse (48421212313), we get a palindrome (79742424797).

The spelling of 31321212484 in words is "thirty-one billion, three hundred twenty-one million, two hundred twelve thousand, four hundred eighty-four".