31212420420210 has 16 divisors (see below), whose sum is σ = 74909809008576. Its totient is φ = 8323312112048.

The previous prime is 31212420420191. The next prime is 31212420420239. The reversal of 31212420420210 is 1202402421213.

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 7 ways as a sum of consecutive naturals, for example, 520207006974 + ... + 520207007033.

It is an arithmetic number, because the mean of its divisors is an integer number (4681863063036).

Almost surely, 2^{31212420420210} is an apocalyptic number.

31212420420210 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

31212420420210 is an abundant number, since it is smaller than the sum of its proper divisors (43697388588366).

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

31212420420210 is a wasteful number, since it uses less digits than its factorization.

31212420420210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1040414014017.

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 31212420420210 its reverse (1202402421213), we get a palindrome (32414822841423).

The spelling of 31212420420210 in words is "thirty-one trillion, two hundred twelve billion, four hundred twenty million, four hundred twenty thousand, two hundred ten".