216677320231 has 8 divisors (see below), whose sum is σ = 219529017920. Its totient is φ = 213828346368.

The previous prime is 216677320213. The next prime is 216677320243. The reversal of 216677320231 is 132023776612.

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 216677320231 - 2¹³ = 216677312039 is a prime.

It is a super-2 number, since 2×216677320231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216677320201) 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, 520566 + ... + 839251.

It is an arithmetic number, because the mean of its divisors is an integer number (27441127240).

Almost surely, 2^216677320231 is an apocalyptic number.

216677320231 is a deficient number, since it is larger than the sum of its proper divisors (2851697689).

216677320231 is a wasteful number, since it uses less digits than its factorization.

216677320231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1361913.

The product of its (nonzero) digits is 127008, while the sum is 40.

The spelling of 216677320231 in words is "two hundred sixteen billion, six hundred seventy-seven million, three hundred twenty thousand, two hundred thirty-one".