231103428 has 24 divisors (see below), whose sum is σ = 540056832. Its totient is φ = 76917984.

The previous prime is 231103427. The next prime is 231103459. The reversal of 231103428 is 824301132.

It is a junction number, because it is equal to n+sod(n) for n = 231103398 and 231103407.

It is not an unprimeable number, because it can be changed into a prime (231103421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6100 + ... + 22347.

It is an arithmetic number, because the mean of its divisors is an integer number (22502368).

Almost surely, 2^231103428 is an apocalyptic number.

It is an amenable number.

231103428 is an abundant number, since it is smaller than the sum of its proper divisors (308953404).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231103428 is a wasteful number, since it uses less digits than its factorization.

231103428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29131 (or 29129 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 231103428 is about 15202.0863041886. The cubic root of 231103428 is about 613.6708050124.

The spelling of 231103428 in words is "two hundred thirty-one million, one hundred three thousand, four hundred twenty-eight".