231143401 has 8 divisors (see below), whose sum is σ = 233107200. Its totient is φ = 229185600.

The previous prime is 231143387. The next prime is 231143443. The reversal of 231143401 is 104341132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 231143401 - 2⁹ = 231142889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231143461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107505 + ... + 109633.

It is an arithmetic number, because the mean of its divisors is an integer number (29138400).

Almost surely, 2^231143401 is an apocalyptic number.

It is an amenable number.

231143401 is a deficient number, since it is larger than the sum of its proper divisors (1963799).

231143401 is a wasteful number, since it uses less digits than its factorization.

231143401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2999.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 231143401 is about 15203.4009682044. The cubic root of 231143401 is about 613.7061843360.

Adding to 231143401 its reverse (104341132), we get a palindrome (335484533).

The spelling of 231143401 in words is "two hundred thirty-one million, one hundred forty-three thousand, four hundred one".