103531031 has 2 divisors, whose sum is σ = 103531032. Its totient is φ = 103531030.

The previous prime is 103530997. The next prime is 103531033. The reversal of 103531031 is 130135301.

It is a strong prime.

It is an emirp because it is prime and its reverse (130135301) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 103531031 - 2¹⁴ = 103514647 is a prime.

It is a super-2 number, since 2×103531031² = 21437348759845922, which contains 22 as substring.

Together with 103531033, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (103531033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51765515 + 51765516.

It is an arithmetic number, because the mean of its divisors is an integer number (51765516).

Almost surely, 2^103531031 is an apocalyptic number.

103531031 is a deficient number, since it is larger than the sum of its proper divisors (1).

103531031 is an equidigital number, since it uses as much as digits as its factorization.

103531031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 135, while the sum is 17.

The square root of 103531031 is about 10175.0199508404. The cubic root of 103531031 is about 469.5590114407.

Adding to 103531031 its reverse (130135301), we get a palindrome (233666332).

The spelling of 103531031 in words is "one hundred three million, five hundred thirty-one thousand, thirty-one".