1311232433 has 8 divisors (see below), whose sum is σ = 1503341568. Its totient is φ = 1120320864.

The previous prime is 1311232339. The next prime is 1311232471. The reversal of 1311232433 is 3342321131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1311232433 - 2¹² = 1311228337 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1311232399 and 1311232408.

It is not an unprimeable number, because it can be changed into a prime (1311232493) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 297041 + ... + 301422.

It is an arithmetic number, because the mean of its divisors is an integer number (187917696).

Almost surely, 2^1311232433 is an apocalyptic number.

It is an amenable number.

1311232433 is a deficient number, since it is larger than the sum of its proper divisors (192109135).

1311232433 is an equidigital number, since it uses as much as digits as its factorization.

1311232433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 598783.

The product of its digits is 1296, while the sum is 23.

The square root of 1311232433 is about 36210.9435530200. The cubic root of 1311232433 is about 1094.5272057979.

Adding to 1311232433 its reverse (3342321131), we get a palindrome (4653553564).

The spelling of 1311232433 in words is "one billion, three hundred eleven million, two hundred thirty-two thousand, four hundred thirty-three".