823242111100131 has 16 divisors (see below), whose sum is σ = 1124435051550720. Its totient is φ = 535438784316480.

The previous prime is 823242111100111. The next prime is 823242111100183. The reversal of 823242111100131 is 131001111242328.

It is not a de Polignac number, because 823242111100131 - 2⁹ = 823242111099619 is a prime.

It is a super-2 number, since 2×823242111100131² (a number of 31 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (823242111100111) 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, 254130 + ... + 40577688.

It is an arithmetic number, because the mean of its divisors is an integer number (70277190721920).

Almost surely, 2^{823242111100131} is an apocalyptic number.

823242111100131 is a deficient number, since it is larger than the sum of its proper divisors (301192940450589).

823242111100131 is a wasteful number, since it uses less digits than its factorization.

823242111100131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40489586.

The product of its (nonzero) digits is 2304, while the sum is 30.

Adding to 823242111100131 its reverse (131001111242328), we get a palindrome (954243222342459).

The spelling of 823242111100131 in words is "eight hundred twenty-three trillion, two hundred forty-two billion, one hundred eleven million, one hundred thousand, one hundred thirty-one".