31218112880641 has 8 divisors (see below), whose sum is σ = 32061562488000. Its totient is φ = 30385140908400.

The previous prime is 31218112880627. The next prime is 31218112880657. The reversal of 31218112880641 is 14608821181213.

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 31218112880641 - 2¹³ = 31218112872449 is a prime.

It is a super-2 number, since 2×31218112880641² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31218112880591 and 31218112880600.

It is not an unprimeable number, because it can be changed into a prime (31218112880611) 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, 2619402741 + ... + 2619414658.

It is an arithmetic number, because the mean of its divisors is an integer number (4007695311000).

Almost surely, 2^{31218112880641} is an apocalyptic number.

It is an amenable number.

31218112880641 is a deficient number, since it is larger than the sum of its proper divisors (843449607359).

31218112880641 is a wasteful number, since it uses less digits than its factorization.

31218112880641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5238817559.

The product of its (nonzero) digits is 147456, while the sum is 46.

The spelling of 31218112880641 in words is "thirty-one trillion, two hundred eighteen billion, one hundred twelve million, eight hundred eighty thousand, six hundred forty-one".