111103811431 has 4 divisors (see below), whose sum is σ = 115934411952. Its totient is φ = 106273210912.

The previous prime is 111103811411. The next prime is 111103811449. The reversal of 111103811431 is 134118301111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 134118301111 = 251 ⋅534335861.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111103811431 is a prime.

It is a super-2 number, since 2×111103811431² (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 = 111103811396 and 111103811405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111103811411) 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, 2415300226 + ... + 2415300271.

It is an arithmetic number, because the mean of its divisors is an integer number (28983602988).

Almost surely, 2^111103811431 is an apocalyptic number.

111103811431 is a deficient number, since it is larger than the sum of its proper divisors (4830600521).

111103811431 is an equidigital number, since it uses as much as digits as its factorization.

111103811431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4830600520.

The product of its (nonzero) digits is 288, while the sum is 25.

The spelling of 111103811431 in words is "one hundred eleven billion, one hundred three million, eight hundred eleven thousand, four hundred thirty-one".