1331301233 has 4 divisors (see below), whose sum is σ = 1333378788. Its totient is φ = 1329223680.

The previous prime is 1331301227. The next prime is 1331301269. The reversal of 1331301233 is 3321031331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3321031331 = 127 ⋅26149853.

It can be written as a sum of positive squares in 2 ways, for example, as 1201523569 + 129777664 = 34663^2 + 11392^2 .

It is a cyclic number.

It is not a de Polignac number, because 1331301233 - 2¹⁴ = 1331284849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1331301733) 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, 1037816 + ... + 1039097.

It is an arithmetic number, because the mean of its divisors is an integer number (333344697).

Almost surely, 2^1331301233 is an apocalyptic number.

It is an amenable number.

1331301233 is a deficient number, since it is larger than the sum of its proper divisors (2077555).

1331301233 is an equidigital number, since it uses as much as digits as its factorization.

1331301233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2077554.

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

The square root of 1331301233 is about 36487.0008770247. Note that the first 3 decimals coincide. The cubic root of 1331301233 is about 1100.0829780379.

Adding to 1331301233 its reverse (3321031331), we get a palindrome (4652332564).

The spelling of 1331301233 in words is "one billion, three hundred thirty-one million, three hundred one thousand, two hundred thirty-three".