11312312003 has 2 divisors, whose sum is σ = 11312312004. Its totient is φ = 11312312002.

The previous prime is 11312311991. The next prime is 11312312027. The reversal of 11312312003 is 30021321311.

It is a weak prime.

It is an emirp because it is prime and its reverse (30021321311) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11312312003 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (11312812003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5656156001 + 5656156002.

It is an arithmetic number, because the mean of its divisors is an integer number (5656156002).

Almost surely, 2^11312312003 is an apocalyptic number.

11312312003 is a deficient number, since it is larger than the sum of its proper divisors (1).

11312312003 is an equidigital number, since it uses as much as digits as its factorization.

11312312003 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 11312312003 its reverse (30021321311), we get a palindrome (41333633314).

The spelling of 11312312003 in words is "eleven billion, three hundred twelve million, three hundred twelve thousand, three".