31321344100 has 36 divisors (see below), whose sum is σ = 68342866228. Its totient is φ = 12459312000.

The previous prime is 31321344059. The next prime is 31321344127. The reversal of 31321344100 is 144312313.

It can be written as a sum of positive squares in 6 ways, for example, as 17259653376 + 14061690724 = 131376^2 + 118582^2 .

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 11 ways as a sum of consecutive naturals, for example, 847131 + ... + 883330.

Almost surely, 2^31321344100 is an apocalyptic number.

It is an amenable number.

31321344100 is an abundant number, since it is smaller than the sum of its proper divisors (37021522128).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31321344100 is a wasteful number, since it uses less digits than its factorization.

31321344100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1730656 (or 1730649 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 31321344100 its reverse (144312313), we get a palindrome (31465656413).

The spelling of 31321344100 in words is "thirty-one billion, three hundred twenty-one million, three hundred forty-four thousand, one hundred".