31212323009999 has 8 divisors (see below), whose sum is σ = 31597640835072. Its totient is φ = 30828587599800.

The previous prime is 31212323009993. The next prime is 31212323010019. The reversal of 31212323009999 is 99990032321213.

It is a happy number.

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 31212323009999 - 2¹⁶ = 31212322944463 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31212323009999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31212323009993) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 395564027 + ... + 395642924.

It is an arithmetic number, because the mean of its divisors is an integer number (3949705104384).

Almost surely, 2^{31212323009999} is an apocalyptic number.

31212323009999 is a deficient number, since it is larger than the sum of its proper divisors (385317825073).

31212323009999 is a wasteful number, since it uses less digits than its factorization.

31212323009999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 791207437.

The product of its (nonzero) digits is 1417176, while the sum is 53.

The spelling of 31212323009999 in words is "thirty-one trillion, two hundred twelve billion, three hundred twenty-three million, nine thousand, nine hundred ninety-nine".