1331500223 has 4 divisors (see below), whose sum is σ = 1331676648. Its totient is φ = 1331323800.

The previous prime is 1331500213. The next prime is 1331500243. The reversal of 1331500223 is 3220051331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3220051331 = 7 ⋅460007333.

It is a cyclic number.

It is not a de Polignac number, because 1331500223 - 2¹⁰ = 1331499199 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1331500195 and 1331500204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331500213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76361 + ... + 92162.

It is an arithmetic number, because the mean of its divisors is an integer number (332919162).

Almost surely, 2^1331500223 is an apocalyptic number.

1331500223 is a deficient number, since it is larger than the sum of its proper divisors (176425).

1331500223 is an equidigital number, since it uses as much as digits as its factorization.

1331500223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176424.

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 1331500223 is about 36489.7276366925. The cubic root of 1331500223 is about 1100.1377852197.

Adding to 1331500223 its reverse (3220051331), we get a palindrome (4551551554).

The spelling of 1331500223 in words is "one billion, three hundred thirty-one million, five hundred thousand, two hundred twenty-three".