231141409 has 8 divisors (see below), whose sum is σ = 235476000. Its totient is φ = 226820832.

The previous prime is 231141377. The next prime is 231141437. The reversal of 231141409 is 904141132.

It is a happy number.

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 231141409 - 2⁵ = 231141377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231141499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33357 + ... + 39685.

It is an arithmetic number, because the mean of its divisors is an integer number (29434500).

Almost surely, 2^231141409 is an apocalyptic number.

It is an amenable number.

231141409 is a deficient number, since it is larger than the sum of its proper divisors (4334591).

231141409 is an equidigital number, since it uses as much as digits as its factorization.

231141409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7007.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 231141409 is about 15203.3354564056. The cubic root of 231141409 is about 613.7044213522.

The spelling of 231141409 in words is "two hundred thirty-one million, one hundred forty-one thousand, four hundred nine".