103240031 has 16 divisors (see below), whose sum is σ = 115660224. Its totient is φ = 91643904.

The previous prime is 103240021. The next prime is 103240037. The reversal of 103240031 is 130042301.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-103240031 is a prime.

It is a super-2 number, since 2×103240031² = 21317008001761922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 103239988 and 103240015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103240037) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26735 + ... + 30351.

It is an arithmetic number, because the mean of its divisors is an integer number (7228764).

Almost surely, 2^103240031 is an apocalyptic number.

103240031 is a deficient number, since it is larger than the sum of its proper divisors (12420193).

103240031 is a wasteful number, since it uses less digits than its factorization.

103240031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3730.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 103240031 is about 10160.7101621885. The cubic root of 103240031 is about 469.1186607130.

Adding to 103240031 its reverse (130042301), we get a palindrome (233282332).

The spelling of 103240031 in words is "one hundred three million, two hundred forty thousand, thirty-one".