1331013323 has 4 divisors (see below), whose sum is σ = 1331495400. Its totient is φ = 1330531248.

The previous prime is 1331013301. The next prime is 1331013329. The reversal of 1331013323 is 3233101331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3233101331 = 173 ⋅18688447.

It is a cyclic number.

It is not a de Polignac number, because 1331013323 - 2¹⁴ = 1330996939 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1331013295 and 1331013304.

It is not an unprimeable number, because it can be changed into a prime (1331013329) 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, 236873 + ... + 242426.

It is an arithmetic number, because the mean of its divisors is an integer number (332873850).

Almost surely, 2^1331013323 is an apocalyptic number.

1331013323 is a deficient number, since it is larger than the sum of its proper divisors (482077).

1331013323 is an equidigital number, since it uses as much as digits as its factorization.

1331013323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 482076.

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

The square root of 1331013323 is about 36483.0552859817. The cubic root of 1331013323 is about 1100.0036702357.

Adding to 1331013323 its reverse (3233101331), we get a palindrome (4564114654).

The spelling of 1331013323 in words is "one billion, three hundred thirty-one million, thirteen thousand, three hundred twenty-three".