31320422123987 has 8 divisors (see below), whose sum is σ = 31372259398032. Its totient is φ = 31268627712000.

The previous prime is 31320422123959. The next prime is 31320422124007. The reversal of 31320422123987 is 78932122402313.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31320422123987 - 2¹⁶ = 31320422058451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31320422123087) 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 7 ways as a sum of consecutive naturals, for example, 9252689 + ... + 12175922.

It is an arithmetic number, because the mean of its divisors is an integer number (3921532424754).

Almost surely, 2^{31320422123987} is an apocalyptic number.

31320422123987 is a deficient number, since it is larger than the sum of its proper divisors (51837274045).

31320422123987 is a wasteful number, since it uses less digits than its factorization.

31320422123987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21431029.

The product of its (nonzero) digits is 870912, while the sum is 47.

The spelling of 31320422123987 in words is "thirty-one trillion, three hundred twenty billion, four hundred twenty-two million, one hundred twenty-three thousand, nine hundred eighty-seven".