1216231467 has 32 divisors (see below), whose sum is σ = 1849499136. Its totient is φ = 703718400.

The previous prime is 1216231433. The next prime is 1216231529. The reversal of 1216231467 is 7641326121.

It is not a de Polignac number, because 1216231467 - 2¹⁸ = 1215969323 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (1216231417) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 509617 + ... + 511997.

It is an arithmetic number, because the mean of its divisors is an integer number (57796848).

Almost surely, 2^1216231467 is an apocalyptic number.

1216231467 is a deficient number, since it is larger than the sum of its proper divisors (633267669).

1216231467 is a wasteful number, since it uses less digits than its factorization.

1216231467 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3091.

The product of its digits is 12096, while the sum is 33.

The square root of 1216231467 is about 34874.5102761315. The cubic root of 1216231467 is about 1067.4283796356.

Adding to 1216231467 its reverse (7641326121), we get a palindrome (8857557588).

The spelling of 1216231467 in words is "one billion, two hundred sixteen million, two hundred thirty-one thousand, four hundred sixty-seven".