231344409 has 8 divisors (see below), whose sum is σ = 309921952. Its totient is φ = 153498240.

The previous prime is 231344401. The next prime is 231344431. The reversal of 231344409 is 904443132.

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

It is not a de Polignac number, because 231344409 - 2³ = 231344401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231344401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 182104 + ... + 183369.

It is an arithmetic number, because the mean of its divisors is an integer number (38740244).

Almost surely, 2^231344409 is an apocalyptic number.

It is an amenable number.

231344409 is a deficient number, since it is larger than the sum of its proper divisors (78577543).

231344409 is a wasteful number, since it uses less digits than its factorization.

231344409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365687.

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 231344409 is about 15210.0101577875. The cubic root of 231344409 is about 613.8840308021.

The spelling of 231344409 in words is "two hundred thirty-one million, three hundred forty-four thousand, four hundred nine".