231434425 has 12 divisors (see below), whose sum is σ = 289173456. Its totient is φ = 183731600.

The previous prime is 231434407. The next prime is 231434429. The reversal of 231434425 is 524434132.

It is a happy number.

It is not a de Polignac number, because 231434425 - 2⁹ = 231433913 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231434393 and 231434402.

It is not an unprimeable number, because it can be changed into a prime (231434429) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32059 + ... + 38608.

It is an arithmetic number, because the mean of its divisors is an integer number (24097788).

Almost surely, 2^231434425 is an apocalyptic number.

231434425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

231434425 is a deficient number, since it is larger than the sum of its proper divisors (57739031).

231434425 is a wasteful number, since it uses less digits than its factorization.

231434425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70808 (or 70803 counting only the distinct ones).

The product of its digits is 11520, while the sum is 28.

The square root of 231434425 is about 15212.9689738723. The cubic root of 231434425 is about 613.9636411394.

Adding to 231434425 its reverse (524434132), we get a palindrome (755868557).

The spelling of 231434425 in words is "two hundred thirty-one million, four hundred thirty-four thousand, four hundred twenty-five".