103231031 has 4 divisors (see below), whose sum is σ = 103663200. Its totient is φ = 102798864.

The previous prime is 103231027. The next prime is 103231049. The reversal of 103231031 is 130132301.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 130132301 = 13 ⋅10010177.

It is a cyclic number.

It is not a de Polignac number, because 103231031 - 2² = 103231027 is a prime.

It is a super-2 number, since 2×103231031² = 21313291522645922, 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 = 103230997 and 103231015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103231091) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 215726 + ... + 216203.

It is an arithmetic number, because the mean of its divisors is an integer number (25915800).

Almost surely, 2^103231031 is an apocalyptic number.

103231031 is a deficient number, since it is larger than the sum of its proper divisors (432169).

103231031 is an equidigital number, since it uses as much as digits as its factorization.

103231031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432168.

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 103231031 is about 10160.2672701066. The cubic root of 103231031 is about 469.1050284342.

Adding to 103231031 its reverse (130132301), we get a palindrome (233363332).

The spelling of 103231031 in words is "one hundred three million, two hundred thirty-one thousand, thirty-one".