111211040431 has 8 divisors (see below), whose sum is σ = 112793972480. Its totient is φ = 109632488472.

The previous prime is 111211040393. The next prime is 111211040477. The reversal of 111211040431 is 134040112111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 111211040431 - 2¹¹ = 111211038383 is a prime.

It is a super-2 number, since 2×111211040431² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111211040399 and 111211040408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111211040131) 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, 1043865 + ... + 1145458.

It is an arithmetic number, because the mean of its divisors is an integer number (14099246560).

Almost surely, 2^111211040431 is an apocalyptic number.

111211040431 is a deficient number, since it is larger than the sum of its proper divisors (1582932049).

111211040431 is an equidigital number, since it uses as much as digits as its factorization.

111211040431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2190045.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 111211040431 its reverse (134040112111), we get a palindrome (245251152542).

The spelling of 111211040431 in words is "one hundred eleven billion, two hundred eleven million, forty thousand, four hundred thirty-one".