31323030210120 has 128 divisors (see below), whose sum is σ = 103249230336000. Its totient is φ = 7538832602880.

The previous prime is 31323030210103. The next prime is 31323030210211. The reversal of 31323030210120 is 2101203032313.

It is a super-2 number, since 2×31323030210120² (a number of 28 digits) contains 22 as substring.

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, 85174680 + ... + 85541639.

It is an arithmetic number, because the mean of its divisors is an integer number (806634612000).

Almost surely, 2^{31323030210120} is an apocalyptic number.

31323030210120 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31323030210120 is an abundant number, since it is smaller than the sum of its proper divisors (71926200125880).

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

31323030210120 is a wasteful number, since it uses less digits than its factorization.

31323030210120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170716483 (or 170716479 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 31323030210120 its reverse (2101203032313), we get a palindrome (33424233242433).

The spelling of 31323030210120 in words is "thirty-one trillion, three hundred twenty-three billion, thirty million, two hundred ten thousand, one hundred twenty".