103231312 has 20 divisors (see below), whose sum is σ = 200173696. Its totient is φ = 51573600.

The previous prime is 103231307. The next prime is 103231319. The reversal of 103231312 is 213132301.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103231319) 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 in 3 ways as a sum of consecutive naturals, for example, 29563 + ... + 32869.

Almost surely, 2^103231312 is an apocalyptic number.

It is an amenable number.

103231312 is a deficient number, since it is larger than the sum of its proper divisors (96942384).

103231312 is a wasteful number, since it uses less digits than its factorization.

103231312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5266 (or 5260 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 103231312 is about 10160.2810984736. The cubic root of 103231312 is about 469.1054540762.

Adding to 103231312 its reverse (213132301), we get a palindrome (316363613).

The spelling of 103231312 in words is "one hundred three million, two hundred thirty-one thousand, three hundred twelve".