231804401 has 4 divisors (see below), whose sum is σ = 245439972. Its totient is φ = 218168832.

The previous prime is 231804383. The next prime is 231804409. The reversal of 231804401 is 104408132.

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 182790400 + 49014001 = 13520^2 + 7001^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231804401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231804409) 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, 6817760 + ... + 6817793.

It is an arithmetic number, because the mean of its divisors is an integer number (61359993).

Almost surely, 2^231804401 is an apocalyptic number.

It is an amenable number.

231804401 is a deficient number, since it is larger than the sum of its proper divisors (13635571).

231804401 is a wasteful number, since it uses less digits than its factorization.

231804401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13635570.

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 231804401 is about 15225.1240060631. The cubic root of 231804401 is about 614.2906320732.

The spelling of 231804401 in words is "two hundred thirty-one million, eight hundred four thousand, four hundred one".