31130021310330 has 16 divisors (see below), whose sum is σ = 74712051144864. Its totient is φ = 8301339016080.

The previous prime is 31130021310317. The next prime is 31130021310337. The reversal of 31130021310330 is 3301312003113.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 31130021310297 and 31130021310306.

It is not an unprimeable number, because it can be changed into a prime (31130021310337) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 518833688476 + ... + 518833688535.

It is an arithmetic number, because the mean of its divisors is an integer number (4669503196554).

Almost surely, 2^{31130021310330} is an apocalyptic number.

31130021310330 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

31130021310330 is an abundant number, since it is smaller than the sum of its proper divisors (43582029834534).

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

31130021310330 is a wasteful number, since it uses less digits than its factorization.

31130021310330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1037667377021.

The product of its (nonzero) digits is 486, while the sum is 21.

Adding to 31130021310330 its reverse (3301312003113), we get a palindrome (34431333313443).

The spelling of 31130021310330 in words is "thirty-one trillion, one hundred thirty billion, twenty-one million, three hundred ten thousand, three hundred thirty".