1216233234 has 12 divisors (see below), whose sum is σ = 2635172046. Its totient is φ = 405411072.

The previous prime is 1216233209. The next prime is 1216233259. The reversal of 1216233234 is 4323326121.

1216233234 is a `hidden beast` number, since 1 + 2 + 1 + 623 + 3 + 2 + 34 = 666.

It is an interprime number because it is at equal distance from previous prime (1216233209) and next prime (1216233259).

It can be written as a sum of positive squares in only one way, i.e., 745126209 + 471107025 = 27297^2 + 21705^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1216233198 and 1216233207.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 33784239 + ... + 33784274.

Almost surely, 2^1216233234 is an apocalyptic number.

1216233234 is an abundant number, since it is smaller than the sum of its proper divisors (1418938812).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1216233234 is a wasteful number, since it uses less digits than its factorization.

1216233234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67568521 (or 67568518 counting only the distinct ones).

The product of its digits is 5184, while the sum is 27.

The square root of 1216233234 is about 34874.5356098114. The cubic root of 1216233234 is about 1067.4288965725.

Adding to 1216233234 its reverse (4323326121), we get a palindrome (5539559355).

The spelling of 1216233234 in words is "one billion, two hundred sixteen million, two hundred thirty-three thousand, two hundred thirty-four".