11004021431 has 4 divisors (see below), whose sum is σ = 11850484632. Its totient is φ = 10157558232.

The previous prime is 11004021419. The next prime is 11004021433. The reversal of 11004021431 is 13412040011.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 11004021431 - 2¹⁰ = 11004020407 is a prime.

It is a super-2 number, since 2×11004021431² (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 (11004021433) 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, 423231581 + ... + 423231606.

It is an arithmetic number, because the mean of its divisors is an integer number (2962621158).

Almost surely, 2^11004021431 is an apocalyptic number.

11004021431 is a deficient number, since it is larger than the sum of its proper divisors (846463201).

11004021431 is an equidigital number, since it uses as much as digits as its factorization.

11004021431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 846463200.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 11004021431 its reverse (13412040011), we get a palindrome (24416061442).

The spelling of 11004021431 in words is "eleven billion, four million, twenty-one thousand, four hundred thirty-one".