11131231431 has 8 divisors (see below), whose sum is σ = 14863374720. Its totient is φ = 7409954552.

The previous prime is 11131231429. The next prime is 11131231459. The reversal of 11131231431 is 13413213111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11131231431 - 2¹ = 11131231429 is a prime.

It is a super-2 number, since 2×11131231431² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11131231398 and 11131231407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11131230431) 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 7 ways as a sum of consecutive naturals, for example, 2714211 + ... + 2718308.

It is an arithmetic number, because the mean of its divisors is an integer number (1857921840).

Almost surely, 2^11131231431 is an apocalyptic number.

11131231431 is a deficient number, since it is larger than the sum of its proper divisors (3732143289).

11131231431 is an equidigital number, since it uses as much as digits as its factorization.

11131231431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5433205.

The product of its digits is 216, while the sum is 21.

Adding to 11131231431 its reverse (13413213111), we get a palindrome (24544444542).

The spelling of 11131231431 in words is "eleven billion, one hundred thirty-one million, two hundred thirty-one thousand, four hundred thirty-one".