31444451329987 has 32 divisors (see below), whose sum is σ = 33247502991360. Its totient is φ = 29699429760000.

The previous prime is 31444451329979. The next prime is 31444451330003. The reversal of 31444451329987 is 78992315444413.

It is not a de Polignac number, because 31444451329987 - 2³ = 31444451329979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31444451329787) by changing a digit.

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, 2290360339 + ... + 2290374067.

It is an arithmetic number, because the mean of its divisors is an integer number (1038984468480).

Almost surely, 2^{31444451329987} is an apocalyptic number.

31444451329987 is a deficient number, since it is larger than the sum of its proper divisors (1803051661373).

31444451329987 is a wasteful number, since it uses less digits than its factorization.

31444451329987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24235.

The product of its digits is 104509440, while the sum is 64.

The spelling of 31444451329987 in words is "thirty-one trillion, four hundred forty-four billion, four hundred fifty-one million, three hundred twenty-nine thousand, nine hundred eighty-seven".