11131353231 has 16 divisors (see below), whose sum is σ = 14918618880. Its totient is φ = 7382573120.

The previous prime is 11131353203. The next prime is 11131353239. The reversal of 11131353231 is 13235313111.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 11131353231 - 2¹³ = 11131345039 is a prime.

It is a super-2 number, since 2×11131353231² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11131353239) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 591160 + ... + 609698.

It is an arithmetic number, because the mean of its divisors is an integer number (932413680).

Almost surely, 2^11131353231 is an apocalyptic number.

11131353231 is a deficient number, since it is larger than the sum of its proper divisors (3787265649).

11131353231 is a wasteful number, since it uses less digits than its factorization.

11131353231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19566.

The product of its digits is 810, while the sum is 24.

Adding to 11131353231 its reverse (13235313111), we get a palindrome (24366666342).

The spelling of 11131353231 in words is "eleven billion, one hundred thirty-one million, three hundred fifty-three thousand, two hundred thirty-one".