11031011431 has 16 divisors (see below), whose sum is σ = 12699192960. Its totient is φ = 9476390880.

The previous prime is 11031011417. The next prime is 11031011447. The reversal of 11031011431 is 13411013011.

It is not a de Polignac number, because 11031011431 - 2¹⁵ = 11030978663 is a prime.

It is a super-2 number, since 2×11031011431² (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 (11031011401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16500 + ... + 149446.

It is an arithmetic number, because the mean of its divisors is an integer number (793699560).

Almost surely, 2^11031011431 is an apocalyptic number.

11031011431 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11031011431 is a deficient number, since it is larger than the sum of its proper divisors (1668181529).

11031011431 is a wasteful number, since it uses less digits than its factorization.

11031011431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133374.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 11031011431 its reverse (13411013011), we get a palindrome (24442024442).

The spelling of 11031011431 in words is "eleven billion, thirty-one million, eleven thousand, four hundred thirty-one".