111325031 has 2 divisors, whose sum is σ = 111325032. Its totient is φ = 111325030.

The previous prime is 111325013. The next prime is 111325043. The reversal of 111325031 is 130523111.

Together with previous prime (111325013) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111325031 is a prime.

It is a super-2 number, since 2×111325031² = 24786525054301922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111325631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55662515 + 55662516.

It is an arithmetic number, because the mean of its divisors is an integer number (55662516).

Almost surely, 2^111325031 is an apocalyptic number.

111325031 is a deficient number, since it is larger than the sum of its proper divisors (1).

111325031 is an equidigital number, since it uses as much as digits as its factorization.

111325031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90, while the sum is 17.

The square root of 111325031 is about 10551.0677658709. The cubic root of 111325031 is about 481.0581848490.

Adding to 111325031 its reverse (130523111), we get a palindrome (241848142).

The spelling of 111325031 in words is "one hundred eleven million, three hundred twenty-five thousand, thirty-one".