1233231331 has 4 divisors (see below), whose sum is σ = 1233327592. Its totient is φ = 1233135072.

The previous prime is 1233231313. The next prime is 1233231343. The reversal of 1233231331 is 1331323321.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1331323321 = 89 ⋅14958689.

It is a cyclic number.

It is not a de Polignac number, because 1233231331 - 2⁹ = 1233230819 is a prime.

It is a super-2 number, since 2×1233231331² = 3041719031520063122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1233231301) 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, 25305 + ... + 55738.

It is an arithmetic number, because the mean of its divisors is an integer number (308331898).

Almost surely, 2^1233231331 is an apocalyptic number.

1233231331 is a deficient number, since it is larger than the sum of its proper divisors (96261).

1233231331 is an equidigital number, since it uses as much as digits as its factorization.

1233231331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96260.

The product of its digits is 972, while the sum is 22.

The square root of 1233231331 is about 35117.3935678604. The cubic root of 1233231331 is about 1072.3787097927.

Adding to 1233231331 its reverse (1331323321), we get a palindrome (2564554652).

The spelling of 1233231331 in words is "one billion, two hundred thirty-three million, two hundred thirty-one thousand, three hundred thirty-one".