31321103132 has 72 divisors (see below), whose sum is σ = 61022581200. Its totient is φ = 14054656000.

The previous prime is 31321103129. The next prime is 31321103201. The reversal of 31321103132 is 23130112313.

It is a congruent 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 23 ways as a sum of consecutive naturals, for example, 21948203 + ... + 21949629.

It is an arithmetic number, because the mean of its divisors is an integer number (847535850).

Almost surely, 2^31321103132 is an apocalyptic number.

It is an amenable number.

31321103132 is a deficient number, since it is larger than the sum of its proper divisors (29701478068).

31321103132 is a wasteful number, since it uses less digits than its factorization.

31321103132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2003 (or 1990 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 31321103132 its reverse (23130112313), we get a palindrome (54451215445).

The spelling of 31321103132 in words is "thirty-one billion, three hundred twenty-one million, one hundred three thousand, one hundred thirty-two".