31420644465412 has 24 divisors (see below), whose sum is σ = 56024256389976. Its totient is φ = 15413720994048.

The previous prime is 31420644465391. The next prime is 31420644465451. The reversal of 31420644465412 is 21456444602413.

It can be written as a sum of positive squares in 4 ways, for example, as 1057392663616 + 30363251801796 = 1028296^2 + 5510286^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18325818 + ... + 19966894.

It is an arithmetic number, because the mean of its divisors is an integer number (2334344016249).

Almost surely, 2^{31420644465412} is an apocalyptic number.

It is an amenable number.

31420644465412 is a deficient number, since it is larger than the sum of its proper divisors (24603611924564).

31420644465412 is a wasteful number, since it uses less digits than its factorization.

31420644465412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1731447 (or 1731445 counting only the distinct ones).

The product of its (nonzero) digits is 2211840, while the sum is 46.

The spelling of 31420644465412 in words is "thirty-one trillion, four hundred twenty billion, six hundred forty-four million, four hundred sixty-five thousand, four hundred twelve".