1220246231 has 2 divisors, whose sum is σ = 1220246232. Its totient is φ = 1220246230.

The previous prime is 1220246227. The next prime is 1220246239. The reversal of 1220246231 is 1326420221.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1220246231 - 2² = 1220246227 is a prime.

It is a super-2 number, since 2×1220246231² = 2978001728539410722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 1220246197 and 1220246206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1220246239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610123115 + 610123116.

It is an arithmetic number, because the mean of its divisors is an integer number (610123116).

Almost surely, 2^1220246231 is an apocalyptic number.

1220246231 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220246231 is an equidigital number, since it uses as much as digits as its factorization.

1220246231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 1220246231 is about 34932.0230018246. The cubic root of 1220246231 is about 1068.6016119645.

Adding to 1220246231 its reverse (1326420221), we get a palindrome (2546666452).

The spelling of 1220246231 in words is "one billion, two hundred twenty million, two hundred forty-six thousand, two hundred thirty-one".