231447233 has 4 divisors (see below), whose sum is σ = 231549780. Its totient is φ = 231344688.

The previous prime is 231447217. The next prime is 231447241. The reversal of 231447233 is 332744132.

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

It can be written as a sum of positive squares in 2 ways, for example, as 100962304 + 130484929 = 10048^2 + 11423^2 .

It is a cyclic number.

It is not a de Polignac number, because 231447233 - 2⁴ = 231447217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231447196 and 231447205.

It is not an unprimeable number, because it can be changed into a prime (231447253) 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, 47810 + ... + 52427.

It is an arithmetic number, because the mean of its divisors is an integer number (57887445).

Almost surely, 2^231447233 is an apocalyptic number.

It is an amenable number.

231447233 is a deficient number, since it is larger than the sum of its proper divisors (102547).

231447233 is a wasteful number, since it uses less digits than its factorization.

231447233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102546.

The product of its digits is 12096, while the sum is 29.

The square root of 231447233 is about 15213.3899246683. The cubic root of 231447233 is about 613.9749668836.

The spelling of 231447233 in words is "two hundred thirty-one million, four hundred forty-seven thousand, two hundred thirty-three".