231454928 has 30 divisors (see below), whose sum is σ = 463407282. Its totient is φ = 111986880.

The previous prime is 231454907. The next prime is 231454999. The reversal of 231454928 is 829454132.

It can be written as a sum of positive squares in only one way, i.e., 228856384 + 2598544 = 15128^2 + 1612^2 .

It is a junction number, because it is equal to n+sod(n) for n = 231454891 and 231454900.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7850 + ... + 22902.

Almost surely, 2^231454928 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231454928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (231703641).

231454928 is an abundant number, since it is smaller than the sum of its proper divisors (231952354).

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

231454928 is a wasteful number, since it uses less digits than its factorization.

231454928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15123 (or 15086 counting only the distinct ones).

The product of its digits is 69120, while the sum is 38.

The square root of 231454928 is about 15213.6428247807. The cubic root of 231454928 is about 613.9817711487.

The spelling of 231454928 in words is "two hundred thirty-one million, four hundred fifty-four thousand, nine hundred twenty-eight".