1201331303 has 4 divisors (see below), whose sum is σ = 1203311040. Its totient is φ = 1199351568.

The previous prime is 1201331279. The next prime is 1201331311. The reversal of 1201331303 is 3031331021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3031331021 = 359 ⋅8443819.

It is a cyclic number.

It is not a de Polignac number, because 1201331303 - 2¹² = 1201327207 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 (1201331603) 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, 988958 + ... + 990171.

It is an arithmetic number, because the mean of its divisors is an integer number (300827760).

Almost surely, 2^1201331303 is an apocalyptic number.

1201331303 is a deficient number, since it is larger than the sum of its proper divisors (1979737).

1201331303 is an equidigital number, since it uses as much as digits as its factorization.

1201331303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1979736.

The product of its (nonzero) digits is 162, while the sum is 17.

The square root of 1201331303 is about 34660.2265284000. The cubic root of 1201331303 is about 1063.0514018745.

Adding to 1201331303 its reverse (3031331021), we get a palindrome (4232662324).

The spelling of 1201331303 in words is "one billion, two hundred one million, three hundred thirty-one thousand, three hundred three".