1212404231 has 8 divisors (see below), whose sum is σ = 1292371200. Its totient is φ = 1134052920.

The previous prime is 1212404213. The next prime is 1212404239. The reversal of 1212404231 is 1324042121.

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 1212404231 - 2²⁶ = 1145295367 is a prime.

It is a super-2 number, since 2×1212404231² = 2939848038693402722, 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 (1212404239) 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, 402365 + ... + 405366.

It is an arithmetic number, because the mean of its divisors is an integer number (161546400).

Almost surely, 2^1212404231 is an apocalyptic number.

1212404231 is a deficient number, since it is larger than the sum of its proper divisors (79966969).

1212404231 is an equidigital number, since it uses as much as digits as its factorization.

1212404231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 807829.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 1212404231 is about 34819.5955031072. The cubic root of 1212404231 is about 1066.3075422658.

Adding to 1212404231 its reverse (1324042121), we get a palindrome (2536446352).

The spelling of 1212404231 in words is "one billion, two hundred twelve million, four hundred four thousand, two hundred thirty-one".