1201911306 has 8 divisors (see below), whose sum is σ = 2403822624. Its totient is φ = 400637100.

The previous prime is 1201911301. The next prime is 1201911311. The reversal of 1201911306 is 6031191021.

It is an interprime number because it is at equal distance from previous prime (1201911301) and next prime (1201911311).

It is a sphenic number, since it is the product of 3 distinct primes.

1201911306 is an admirable number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1201911301) 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, 100159270 + ... + 100159281.

It is an arithmetic number, because the mean of its divisors is an integer number (300477828).

Almost surely, 2^1201911306 is an apocalyptic number.

1201911306 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1201911306 is a wasteful number, since it uses less digits than its factorization.

1201911306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200318556.

The product of its (nonzero) digits is 324, while the sum is 24.

The square root of 1201911306 is about 34668.5925009943. The cubic root of 1201911306 is about 1063.2224548277. Note that the first 3 decimals are identical.

The spelling of 1201911306 in words is "one billion, two hundred one million, nine hundred eleven thousand, three hundred six".