231440530125 has 48 divisors (see below), whose sum is σ = 447993329472. Its totient is φ = 105801376800.

The previous prime is 231440530063. The next prime is 231440530129. The reversal of 231440530125 is 521035044132.

It is not a de Polignac number, because 231440530125 - 2¹⁴ = 231440513741 is a prime.

It is a super-3 number, since 3×231440530125³ (a number of 35 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 231440530092 and 231440530101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231440530129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6279327 + ... + 6316076.

It is an arithmetic number, because the mean of its divisors is an integer number (9333194364).

Almost surely, 2^231440530125 is an apocalyptic number.

231440530125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

231440530125 is a deficient number, since it is larger than the sum of its proper divisors (216552799347).

231440530125 is a wasteful number, since it uses less digits than its factorization.

231440530125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12595435 (or 12595418 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 231440530125 its reverse (521035044132), we get a palindrome (752475574257).

The spelling of 231440530125 in words is "two hundred thirty-one billion, four hundred forty million, five hundred thirty thousand, one hundred twenty-five".