103000031 has 4 divisors (see below), whose sum is σ = 103225872. Its totient is φ = 102774192.

The previous prime is 102999979. The next prime is 103000039. The reversal of 103000031 is 130000301.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-103000031 is a prime.

It is a super-2 number, since 2×103000031² = 21218012772001922, 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 = 102999982 and 103000018.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103000039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112235 + ... + 113148.

It is an arithmetic number, because the mean of its divisors is an integer number (25806468).

Almost surely, 2^103000031 is an apocalyptic number.

103000031 is a deficient number, since it is larger than the sum of its proper divisors (225841).

103000031 is an equidigital number, since it uses as much as digits as its factorization.

103000031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225840.

The product of its (nonzero) digits is 9, while the sum is 8.

The square root of 103000031 is about 10148.8930923525. The cubic root of 103000031 is about 468.7548617925.

Adding to 103000031 its reverse (130000301), we get a palindrome (233000332).

The spelling of 103000031 in words is "one hundred three million, thirty-one", and thus it is an aban number.