1135312421 has 4 divisors (see below), whose sum is σ = 1135417344. Its totient is φ = 1135207500.

The previous prime is 1135312369. The next prime is 1135312433. The reversal of 1135312421 is 1242135311.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1135312421 - 2⁶ = 1135312357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1135312471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34085 + ... + 58586.

It is an arithmetic number, because the mean of its divisors is an integer number (283854336).

Almost surely, 2^1135312421 is an apocalyptic number.

It is an amenable number.

1135312421 is a deficient number, since it is larger than the sum of its proper divisors (104923).

1135312421 is an equidigital number, since it uses as much as digits as its factorization.

1135312421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104922.

The product of its digits is 720, while the sum is 23.

The square root of 1135312421 is about 33694.3974719834. The cubic root of 1135312421 is about 1043.2101320521.

Adding to 1135312421 its reverse (1242135311), we get a palindrome (2377447732).

The spelling of 1135312421 in words is "one billion, one hundred thirty-five million, three hundred twelve thousand, four hundred twenty-one".