31311321001230 has 64 divisors (see below), whose sum is σ = 75695926864896. Its totient is φ = 8288787360000.

The previous prime is 31311321001193. The next prime is 31311321001243. The reversal of 31311321001230 is 3210012311313.

It is a happy number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 31311321001197 and 31311321001206.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4375375 + ... + 9042485.

It is an arithmetic number, because the mean of its divisors is an integer number (1182748857264).

Almost surely, 2^{31311321001230} is an apocalyptic number.

31311321001230 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

31311321001230 is an abundant number, since it is smaller than the sum of its proper divisors (44384605863666).

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

31311321001230 is a wasteful number, since it uses less digits than its factorization.

31311321001230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4668753.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 31311321001230 its reverse (3210012311313), we get a palindrome (34521333312543).

The spelling of 31311321001230 in words is "thirty-one trillion, three hundred eleven billion, three hundred twenty-one million, one thousand, two hundred thirty".