11312003449 has 2 divisors, whose sum is σ = 11312003450. Its totient is φ = 11312003448.

The previous prime is 11312003441. The next prime is 11312003467. The reversal of 11312003449 is 94430021311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11158119424 + 153884025 = 105632^2 + 12405^2 .

It is an emirp because it is prime and its reverse (94430021311) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11312003449 - 2³ = 11312003441 is a prime.

It is a super-2 number, since 2×11312003449² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11312003441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5656001724 + 5656001725.

It is an arithmetic number, because the mean of its divisors is an integer number (5656001725).

Almost surely, 2^11312003449 is an apocalyptic number.

It is an amenable number.

11312003449 is a deficient number, since it is larger than the sum of its proper divisors (1).

11312003449 is an equidigital number, since it uses as much as digits as its factorization.

11312003449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 28.

The spelling of 11312003449 in words is "eleven billion, three hundred twelve million, three thousand, four hundred forty-nine".