1212233231 has 8 divisors (see below), whose sum is σ = 1392038400. Its totient is φ = 1044028440.

The previous prime is 1212233219. The next prime is 1212233233. The reversal of 1212233231 is 1323322121.

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 1212233231 - 2¹⁰ = 1212232207 is a prime.

It is a super-2 number, since 2×1212233231² = 2939018812681398722, which 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 (1212233233) 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, 2899871 + ... + 2900288.

It is an arithmetic number, because the mean of its divisors is an integer number (174004800).

Almost surely, 2^1212233231 is an apocalyptic number.

1212233231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1212233231 is a deficient number, since it is larger than the sum of its proper divisors (179805169).

1212233231 is a wasteful number, since it uses less digits than its factorization.

1212233231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5800189.

The product of its digits is 432, while the sum is 20.

The square root of 1212233231 is about 34817.1399026399. The cubic root of 1212233231 is about 1066.2574085017.

Adding to 1212233231 its reverse (1323322121), we get a palindrome (2535555352).

The spelling of 1212233231 in words is "one billion, two hundred twelve million, two hundred thirty-three thousand, two hundred thirty-one".