11404312013 has 4 divisors (see below), whose sum is σ = 11712536700. Its totient is φ = 11096087328.

The previous prime is 11404311983. The next prime is 11404312057. The reversal of 11404312013 is 31021340411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31021340411 = 3593 ⋅8633827.

It can be written as a sum of positive squares in 2 ways, for example, as 10916697289 + 487614724 = 104483^2 + 22082^2 .

It is a cyclic number.

It is not a de Polignac number, because 11404312013 - 2⁶ = 11404311949 is a prime.

It is a super-2 number, since 2×11404312013² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11404312313) 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, 154112288 + ... + 154112361.

It is an arithmetic number, because the mean of its divisors is an integer number (2928134175).

Almost surely, 2^11404312013 is an apocalyptic number.

It is an amenable number.

11404312013 is a deficient number, since it is larger than the sum of its proper divisors (308224687).

11404312013 is an equidigital number, since it uses as much as digits as its factorization.

11404312013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308224686.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 11404312013 its reverse (31021340411), we get a palindrome (42425652424).

The spelling of 11404312013 in words is "eleven billion, four hundred four million, three hundred twelve thousand, thirteen".