1230211331 has 4 divisors (see below), whose sum is σ = 1237084200. Its totient is φ = 1223338464.

The previous prime is 1230211319. The next prime is 1230211343. The reversal of 1230211331 is 1331120321.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (1230211319) and next prime (1230211343).

It is a cyclic number.

It is not a de Polignac number, because 1230211331 - 2⁶ = 1230211267 is a prime.

It is a super-2 number, since 2×1230211331² = 3026839837841583122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1230216331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3436166 + ... + 3436523.

It is an arithmetic number, because the mean of its divisors is an integer number (309271050).

Almost surely, 2^1230211331 is an apocalyptic number.

1230211331 is a deficient number, since it is larger than the sum of its proper divisors (6872869).

1230211331 is an equidigital number, since it uses as much as digits as its factorization.

1230211331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6872868.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 1230211331 is about 35074.3685759274. The cubic root of 1230211331 is about 1071.5026289830.

Adding to 1230211331 its reverse (1331120321), we get a palindrome (2561331652).

The spelling of 1230211331 in words is "one billion, two hundred thirty million, two hundred eleven thousand, three hundred thirty-one".