31212103123020 has 48 divisors (see below), whose sum is σ = 92534705732448. Its totient is φ = 7833625881600.

The previous prime is 31212103123013. The next prime is 31212103123043. The reversal of 31212103123020 is 2032130121213.

31212103123020 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

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 15 ways as a sum of consecutive naturals, for example, 15300049531 + ... + 15300051570.

It is an arithmetic number, because the mean of its divisors is an integer number (1927806369426).

Almost surely, 2^{31212103123020} is an apocalyptic number.

31212103123020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31212103123020 is an abundant number, since it is smaller than the sum of its proper divisors (61322602609428).

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

31212103123020 is a wasteful number, since it uses less digits than its factorization.

31212103123020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30600101130 (or 30600101128 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 31212103123020 its reverse (2032130121213), we get a palindrome (33244233244233).

The spelling of 31212103123020 in words is "thirty-one trillion, two hundred twelve billion, one hundred three million, one hundred twenty-three thousand, twenty".