231265633 has 4 divisors (see below), whose sum is σ = 239240340. Its totient is φ = 223290928.

The previous prime is 231265607. The next prime is 231265649. The reversal of 231265633 is 336562132.

It is a happy number.

231265633 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 95589729 + 135675904 = 9777^2 + 11648^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231265633 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231265595 and 231265604.

It is not an unprimeable number, because it can be changed into a prime (231265693) 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, 3987310 + ... + 3987367.

It is an arithmetic number, because the mean of its divisors is an integer number (59810085).

Almost surely, 2^231265633 is an apocalyptic number.

It is an amenable number.

231265633 is a deficient number, since it is larger than the sum of its proper divisors (7974707).

231265633 is an equidigital number, since it uses as much as digits as its factorization.

231265633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7974706.

The product of its digits is 19440, while the sum is 31.

The square root of 231265633 is about 15207.4203269325. The cubic root of 231265633 is about 613.8143441983.

The spelling of 231265633 in words is "two hundred thirty-one million, two hundred sixty-five thousand, six hundred thirty-three".