1206443400311 has 4 divisors (see below), whose sum is σ = 1269940421400. Its totient is φ = 1142946379224.

The previous prime is 1206443400301. The next prime is 1206443400347. The reversal of 1206443400311 is 1130043446021.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1206443400311 - 2²⁶ = 1206376291447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1206443400301) 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, 31748510516 + ... + 31748510553.

It is an arithmetic number, because the mean of its divisors is an integer number (317485105350).

Almost surely, 2^{1206443400311} is an apocalyptic number.

1206443400311 is a deficient number, since it is larger than the sum of its proper divisors (63497021089).

1206443400311 is an equidigital number, since it uses as much as digits as its factorization.

1206443400311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63497021088.

The product of its (nonzero) digits is 6912, while the sum is 29.

Adding to 1206443400311 its reverse (1130043446021), we get a palindrome (2336486846332).

The spelling of 1206443400311 in words is "one trillion, two hundred six billion, four hundred forty-three million, four hundred thousand, three hundred eleven".