231432425 has 12 divisors (see below), whose sum is σ = 327973056. Its totient is φ = 158696400.

The previous prime is 231432419. The next prime is 231432427. The reversal of 231432425 is 524234132.

It is not a de Polignac number, because 231432425 - 2⁶ = 231432361 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 231432394 and 231432403.

It is not an unprimeable number, because it can be changed into a prime (231432427) 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, 661061 + ... + 661410.

It is an arithmetic number, because the mean of its divisors is an integer number (27331088).

Almost surely, 2^231432425 is an apocalyptic number.

231432425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

231432425 is a deficient number, since it is larger than the sum of its proper divisors (96540631).

231432425 is a wasteful number, since it uses less digits than its factorization.

231432425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1322488 (or 1322483 counting only the distinct ones).

The product of its digits is 5760, while the sum is 26.

The square root of 231432425 is about 15212.9032403417. The cubic root of 231432425 is about 613.9618725595.

Adding to 231432425 its reverse (524234132), we get a palindrome (755666557).

The spelling of 231432425 in words is "two hundred thirty-one million, four hundred thirty-two thousand, four hundred twenty-five".