1331420303 has 4 divisors (see below), whose sum is σ = 1340237808. Its totient is φ = 1322602800.

The previous prime is 1331420291. The next prime is 1331420341. The reversal of 1331420303 is 3030241331.

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 1331420303 - 2⁶ = 1331420239 is a prime.

It is a super-2 number, since 2×1331420303² = 3545360046481223618, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331020303) 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, 4408526 + ... + 4408827.

It is an arithmetic number, because the mean of its divisors is an integer number (335059452).

Almost surely, 2^1331420303 is an apocalyptic number.

1331420303 is a deficient number, since it is larger than the sum of its proper divisors (8817505).

1331420303 is an equidigital number, since it uses as much as digits as its factorization.

1331420303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8817504.

The product of its (nonzero) digits is 648, while the sum is 20.

The square root of 1331420303 is about 36488.6325175389. The cubic root of 1331420303 is about 1100.1157737649.

Adding to 1331420303 its reverse (3030241331), we get a palindrome (4361661634).

The spelling of 1331420303 in words is "one billion, three hundred thirty-one million, four hundred twenty thousand, three hundred three".