31212051451104 has 48 divisors (see below), whose sum is σ = 82274445308160. Its totient is φ = 10360485690240.

The previous prime is 31212051451081. The next prime is 31212051451153. The reversal of 31212051451104 is 40115415021213.

It is a tau number, because it is divible by the number of its divisors (48).

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 7 ways as a sum of consecutive naturals, for example, 680156002 + ... + 680201889.

It is an arithmetic number, because the mean of its divisors is an integer number (1714050943920).

Almost surely, 2^{31212051451104} is an apocalyptic number.

It is an amenable number.

31212051451104 is an abundant number, since it is smaller than the sum of its proper divisors (51062393857056).

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

31212051451104 is a wasteful number, since it uses less digits than its factorization.

31212051451104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1360358143 (or 1360358135 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 30.

Adding to 31212051451104 its reverse (40115415021213), we get a palindrome (71327466472317).

The spelling of 31212051451104 in words is "thirty-one trillion, two hundred twelve billion, fifty-one million, four hundred fifty-one thousand, one hundred four".