231111320411050 has 24 divisors (see below), whose sum is σ = 429867926090316. Its totient is φ = 92444341040640.

The previous prime is 231111320411033. The next prime is 231111320411051. The reversal of 231111320411050 is 50114023111132.

It can be written as a sum of positive squares in 6 ways, for example, as 50213904475329 + 180897415935721 = 7086177^2 + 13449811^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (231111320411051) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21748404 + ... + 30581296.

Almost surely, 2^{231111320411050} is an apocalyptic number.

231111320411050 is a deficient number, since it is larger than the sum of its proper divisors (198756605679266).

231111320411050 is a wasteful number, since it uses less digits than its factorization.

231111320411050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9356202 (or 9356197 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 25.

Adding to 231111320411050 its reverse (50114023111132), we get a palindrome (281225343522182).

The spelling of 231111320411050 in words is "two hundred thirty-one trillion, one hundred eleven billion, three hundred twenty million, four hundred eleven thousand, fifty".