216323074233 has 36 divisors (see below), whose sum is σ = 363773572500. Its totient is φ = 123513901056.

The previous prime is 216323074147. The next prime is 216323074241. The reversal of 216323074233 is 332470323612.

It can be written as a sum of positive squares in 2 ways, for example, as 62324123904 + 153998950329 = 249648^2 + 392427^2 .

It is a de Polignac number, because none of the positive numbers 2^k-216323074233 is a prime.

It is not an unprimeable number, because it can be changed into a prime (216325074233) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 354441 + ... + 747177.

Almost surely, 2^216323074233 is an apocalyptic number.

It is an amenable number.

216323074233 is a deficient number, since it is larger than the sum of its proper divisors (147450498267).

216323074233 is a wasteful number, since it uses less digits than its factorization.

216323074233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394006 (or 393996 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 36.

Adding to 216323074233 its reverse (332470323612), we get a palindrome (548793397845).

The spelling of 216323074233 in words is "two hundred sixteen billion, three hundred twenty-three million, seventy-four thousand, two hundred thirty-three".