11040111431 has 4 divisors (see below), whose sum is σ = 11085921264. Its totient is φ = 10994301600.

The previous prime is 11040111427. The next prime is 11040111469. The reversal of 11040111431 is 13411104011.

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 11040111431 - 2² = 11040111427 is a prime.

It is a super-2 number, since 2×11040111431² (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 (11040191431) 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, 22904555 + ... + 22905036.

It is an arithmetic number, because the mean of its divisors is an integer number (2771480316).

Almost surely, 2^11040111431 is an apocalyptic number.

11040111431 is a deficient number, since it is larger than the sum of its proper divisors (45809833).

11040111431 is an equidigital number, since it uses as much as digits as its factorization.

11040111431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45809832.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 11040111431 its reverse (13411104011), we get a palindrome (24451215442).

The spelling of 11040111431 in words is "eleven billion, forty million, one hundred eleven thousand, four hundred thirty-one".