111103120031 has 2 divisors, whose sum is σ = 111103120032. Its totient is φ = 111103120030.

The previous prime is 111103120021. The next prime is 111103120039. The reversal of 111103120031 is 130021301111.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 111103120031 - 2²² = 111098925727 is a prime.

It is a super-2 number, since 2×111103120031² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 111103119988 and 111103120015.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111103120039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55551560015 + 55551560016.

It is an arithmetic number, because the mean of its divisors is an integer number (55551560016).

Almost surely, 2^111103120031 is an apocalyptic number.

111103120031 is a deficient number, since it is larger than the sum of its proper divisors (1).

111103120031 is an equidigital number, since it uses as much as digits as its factorization.

111103120031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18, while the sum is 14.

Adding to 111103120031 its reverse (130021301111), we get a palindrome (241124421142).

The spelling of 111103120031 in words is "one hundred eleven billion, one hundred three million, one hundred twenty thousand, thirty-one".