216333314454331 has 4 divisors (see below), whose sum is σ = 227719278373000. Its totient is φ = 204947350535664.

The previous prime is 216333314454317. The next prime is 216333314454343. The reversal of 216333314454331 is 133454413333612.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 216333314454331 - 2²⁷ = 216333180236603 is a prime.

It is a super-2 number, since 2×216333314454331² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (216333314454371) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5692981959306 + ... + 5692981959343.

It is an arithmetic number, because the mean of its divisors is an integer number (56929819593250).

Almost surely, 2^{216333314454331} is an apocalyptic number.

216333314454331 is a deficient number, since it is larger than the sum of its proper divisors (11385963918669).

216333314454331 is a wasteful number, since it uses less digits than its factorization.

216333314454331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11385963918668.

The product of its digits is 2799360, while the sum is 46.

Adding to 216333314454331 its reverse (133454413333612), we get a palindrome (349787727787943).

The spelling of 216333314454331 in words is "two hundred sixteen trillion, three hundred thirty-three billion, three hundred fourteen million, four hundred fifty-four thousand, three hundred thirty-one".