231648049 has 4 divisors (see below), whose sum is σ = 235445620. Its totient is φ = 227850480.

The previous prime is 231648041. The next prime is 231648059. The reversal of 231648049 is 940846132.

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 34751025 + 196897024 = 5895^2 + 14032^2 .

It is a cyclic number.

It is not a de Polignac number, because 231648049 - 2³ = 231648041 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231647999 and 231648017.

It is not an unprimeable number, because it can be changed into a prime (231648041) 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, 1898694 + ... + 1898815.

It is an arithmetic number, because the mean of its divisors is an integer number (58861405).

Almost surely, 2^231648049 is an apocalyptic number.

It is an amenable number.

231648049 is a deficient number, since it is larger than the sum of its proper divisors (3797571).

231648049 is an equidigital number, since it uses as much as digits as its factorization.

231648049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3797570.

The product of its (nonzero) digits is 41472, while the sum is 37.

The square root of 231648049 is about 15219.9884691152. The cubic root of 231648049 is about 614.1524880592.

It can be divided in two parts, 23164 and 8049, that added together give a palindrome (31213).

The spelling of 231648049 in words is "two hundred thirty-one million, six hundred forty-eight thousand, forty-nine".