11313163431 has 8 divisors (see below), whose sum is σ = 16760242160. Its totient is φ = 7542108936.

The previous prime is 11313163423. The next prime is 11313163441. The reversal of 11313163431 is 13436131311.

11313163431 is a `hidden beast` number, since 1 + 1 + 3 + 1 + 316 + 343 + 1 = 666.

It is not a de Polignac number, because 11313163431 - 2³ = 11313163423 is a prime.

It is a super-2 number, since 2×11313163431² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 419006053 = 11313163431 / (1 + 1 + 3 + 1 + 3 + 1 + 6 + 3 + 4 + 3 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11313163395 and 11313163404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11313163441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 209503000 + ... + 209503053.

It is an arithmetic number, because the mean of its divisors is an integer number (2095030270).

Almost surely, 2^11313163431 is an apocalyptic number.

11313163431 is a deficient number, since it is larger than the sum of its proper divisors (5447078729).

11313163431 is an equidigital number, since it uses as much as digits as its factorization.

11313163431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419006062 (or 419006056 counting only the distinct ones).

The product of its digits is 1944, while the sum is 27.

Adding to 11313163431 its reverse (13436131311), we get a palindrome (24749294742).

The spelling of 11313163431 in words is "eleven billion, three hundred thirteen million, one hundred sixty-three thousand, four hundred thirty-one".