1233201331 has 4 divisors (see below), whose sum is σ = 1241478000. Its totient is φ = 1224924664.

The previous prime is 1233201317. The next prime is 1233201349. The reversal of 1233201331 is 1331023321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1331023321 = 19 ⋅70053859.

It is a cyclic number.

It is not a de Polignac number, because 1233201331 - 2⁹ = 1233200819 is a prime.

It is a super-2 number, since 2×1233201331² = 3041571045560343122, 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 = 1233201299 and 1233201308.

It is not an unprimeable number, because it can be changed into a prime (1233201371) 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, 4138111 + ... + 4138408.

It is an arithmetic number, because the mean of its divisors is an integer number (310369500).

Almost surely, 2^1233201331 is an apocalyptic number.

1233201331 is a deficient number, since it is larger than the sum of its proper divisors (8276669).

1233201331 is an equidigital number, since it uses as much as digits as its factorization.

1233201331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8276668.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 1233201331 is about 35116.9664265010. The cubic root of 1233201331 is about 1072.3700140406.

Adding to 1233201331 its reverse (1331023321), we get a palindrome (2564224652).

The spelling of 1233201331 in words is "one billion, two hundred thirty-three million, two hundred one thousand, three hundred thirty-one".