31332130000 has 50 divisors (see below), whose sum is σ = 75858244154. Its totient is φ = 12532848000.

The previous prime is 31332129991. The next prime is 31332130043. The reversal of 31332130000 is 3123313.

It can be written as a sum of positive squares in 5 ways, for example, as 15482327184 + 15849802816 = 124428^2 + 125896^2 .

It is a tau number, because it is divible by the number of its divisors (50).

It is a Harshad number since it is a multiple of its sum of digits (16).

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 9 ways as a sum of consecutive naturals, for example, 1556607 + ... + 1576606.

Almost surely, 2^31332130000 is an apocalyptic number.

It is an amenable number.

31332130000 is an abundant number, since it is smaller than the sum of its proper divisors (44526114154).

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

31332130000 is an equidigital number, since it uses as much as digits as its factorization.

31332130000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3133241 (or 3133220 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 16.

Adding to 31332130000 its reverse (3123313), we get a palindrome (31335253313).

The spelling of 31332130000 in words is "thirty-one billion, three hundred thirty-two million, one hundred thirty thousand".