1201331333 has 12 divisors (see below), whose sum is σ = 1284660108. Its totient is φ = 1119519360.

The previous prime is 1201331311. The next prime is 1201331357. The reversal of 1201331333 is 3331331021.

It can be written as a sum of positive squares in 2 ways, for example, as 1046004964 + 155326369 = 32342^2 + 12463^2 .

It is not a de Polignac number, because 1201331333 - 2⁸ = 1201331077 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201331533) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 177023 + ... + 183683.

It is an arithmetic number, because the mean of its divisors is an integer number (107055009).

Almost surely, 2^1201331333 is an apocalyptic number.

It is an amenable number.

1201331333 is a deficient number, since it is larger than the sum of its proper divisors (83328775).

1201331333 is an equidigital number, since it uses as much as digits as its factorization.

1201331333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6884 (or 6781 counting only the distinct ones).

The product of its (nonzero) digits is 486, while the sum is 20.

The square root of 1201331333 is about 34660.2269611727. The cubic root of 1201331333 is about 1063.0514107234.

Adding to 1201331333 its reverse (3331331021), we get a palindrome (4532662354).

The spelling of 1201331333 in words is "one billion, two hundred one million, three hundred thirty-one thousand, three hundred thirty-three".