1312541233 has 4 divisors (see below), whose sum is σ = 1315061028. Its totient is φ = 1310021440.

The previous prime is 1312541201. The next prime is 1312541249. The reversal of 1312541233 is 3321452131.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 848440384 + 464100849 = 29128^2 + 21543^2 .

It is a cyclic number.

It is not a de Polignac number, because 1312541233 - 2⁵ = 1312541201 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1312541198 and 1312541207.

It is not an unprimeable number, because it can be changed into a prime (1312545233) 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, 1259116 + ... + 1260157.

It is an arithmetic number, because the mean of its divisors is an integer number (328765257).

Almost surely, 2^1312541233 is an apocalyptic number.

It is an amenable number.

1312541233 is a deficient number, since it is larger than the sum of its proper divisors (2519795).

1312541233 is an equidigital number, since it uses as much as digits as its factorization.

1312541233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2519794.

The product of its digits is 2160, while the sum is 25.

The square root of 1312541233 is about 36229.0109304684. The cubic root of 1312541233 is about 1094.8912502940.

Adding to 1312541233 its reverse (3321452131), we get a palindrome (4633993364).

The spelling of 1312541233 in words is "one billion, three hundred twelve million, five hundred forty-one thousand, two hundred thirty-three".