1330243331 has 4 divisors (see below), whose sum is σ = 1332256464. Its totient is φ = 1328230200.

The previous prime is 1330243309. The next prime is 1330243361. The reversal of 1330243331 is 1333420331.

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 1330243331 - 2³⁰ = 256501507 is a prime.

It is a super-2 number, since 2×1330243331² = 3539094639339951122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1330243297 and 1330243306.

It is not an unprimeable number, because it can be changed into a prime (1330243361) 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, 1005575 + ... + 1006896.

It is an arithmetic number, because the mean of its divisors is an integer number (333064116).

Almost surely, 2^1330243331 is an apocalyptic number.

1330243331 is a deficient number, since it is larger than the sum of its proper divisors (2013133).

1330243331 is an equidigital number, since it uses as much as digits as its factorization.

1330243331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2013132.

The product of its (nonzero) digits is 1944, while the sum is 23.

The square root of 1330243331 is about 36472.5010247447. The cubic root of 1330243331 is about 1099.7915117264.

Adding to 1330243331 its reverse (1333420331), we get a palindrome (2663663662).

The spelling of 1330243331 in words is "one billion, three hundred thirty million, two hundred forty-three thousand, three hundred thirty-one".