231231430 has 8 divisors (see below), whose sum is σ = 416216592. Its totient is φ = 92492568.

The previous prime is 231231409. The next prime is 231231439. The reversal of 231231430 is 34132132.

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

It is a junction number, because it is equal to n+sod(n) for n = 231231398 and 231231407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231231439) 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, 11561562 + ... + 11561581.

It is an arithmetic number, because the mean of its divisors is an integer number (52027074).

Almost surely, 2^231231430 is an apocalyptic number.

231231430 is a deficient number, since it is larger than the sum of its proper divisors (184985162).

231231430 is a wasteful number, since it uses less digits than its factorization.

231231430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23123150.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 231231430 is about 15206.2957356484. The cubic root of 231231430 is about 613.7840827096.

Adding to 231231430 its reverse (34132132), we get a palindrome (265363562).

The spelling of 231231430 in words is "two hundred thirty-one million, two hundred thirty-one thousand, four hundred thirty".