1212303231 has 12 divisors (see below), whose sum is σ = 1757296008. Its totient is φ = 805344624.

The previous prime is 1212303221. The next prime is 1212303247. The reversal of 1212303231 is 1323032121.

It is not a de Polignac number, because 1212303231 - 2⁵ = 1212303199 is a prime.

It is a super-2 number, since 2×1212303231² = 2939358247786078722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212303221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 235440 + ... + 240533.

It is an arithmetic number, because the mean of its divisors is an integer number (146441334).

Almost surely, 2^1212303231 is an apocalyptic number.

1212303231 is a deficient number, since it is larger than the sum of its proper divisors (544992777).

1212303231 is a wasteful number, since it uses less digits than its factorization.

1212303231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 476262 (or 476259 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 1212303231 is about 34818.1451401421. The cubic root of 1212303231 is about 1066.2779316651.

Adding to 1212303231 its reverse (1323032121), we get a palindrome (2535335352).

The spelling of 1212303231 in words is "one billion, two hundred twelve million, three hundred three thousand, two hundred thirty-one".