1212323407 has 2 divisors, whose sum is σ = 1212323408. Its totient is φ = 1212323406.

The previous prime is 1212323401. The next prime is 1212323423. The reversal of 1212323407 is 7043232121.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1212323407 - 2¹¹ = 1212321359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1212323401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606161703 + 606161704.

It is an arithmetic number, because the mean of its divisors is an integer number (606161704).

Almost surely, 2^1212323407 is an apocalyptic number.

1212323407 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212323407 is an equidigital number, since it uses as much as digits as its factorization.

1212323407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 1212323407 is about 34818.4348729233. The cubic root of 1212323407 is about 1066.2838468805.

Adding to 1212323407 its reverse (7043232121), we get a palindrome (8255555528).

The spelling of 1212323407 in words is "one billion, two hundred twelve million, three hundred twenty-three thousand, four hundred seven".