1201321303 has 64 divisors (see below), whose sum is σ = 1720535040. Its totient is φ = 810196992.

The previous prime is 1201321273. The next prime is 1201321327. The reversal of 1201321303 is 3031231021.

It is a cyclic number.

It is not a de Polignac number, because 1201321303 - 2⁵ = 1201321271 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201321343) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 675151 + ... + 676927.

It is an arithmetic number, because the mean of its divisors is an integer number (26883360).

Almost surely, 2^1201321303 is an apocalyptic number.

1201321303 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1201321303 is a deficient number, since it is larger than the sum of its proper divisors (519213737).

1201321303 is a wasteful number, since it uses less digits than its factorization.

1201321303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1856.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 1201321303 is about 34660.0822705313. The cubic root of 1201321303 is about 1063.0484522181.

Adding to 1201321303 its reverse (3031231021), we get a palindrome (4232552324).

The spelling of 1201321303 in words is "one billion, two hundred one million, three hundred twenty-one thousand, three hundred three".