111431142331 has 4 divisors (see below), whose sum is σ = 112841663200. Its totient is φ = 110020621464.

The previous prime is 111431142313. The next prime is 111431142359. The reversal of 111431142331 is 133241134111.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 111431142331 - 2¹⁷ = 111431011259 is a prime.

It is a super-3 number, since 3×111431142331³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111431142296 and 111431142305.

It is not an unprimeable number, because it can be changed into a prime (111431142301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 705260316 + ... + 705260473.

It is an arithmetic number, because the mean of its divisors is an integer number (28210415800).

Almost surely, 2^111431142331 is an apocalyptic number.

111431142331 is a deficient number, since it is larger than the sum of its proper divisors (1410520869).

111431142331 is an equidigital number, since it uses as much as digits as its factorization.

111431142331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1410520868.

The product of its digits is 864, while the sum is 25.

Adding to 111431142331 its reverse (133241134111), we get a palindrome (244672276442).

The spelling of 111431142331 in words is "one hundred eleven billion, four hundred thirty-one million, one hundred forty-two thousand, three hundred thirty-one".