231230402225 has 12 divisors (see below), whose sum is σ = 286786811136. Its totient is φ = 184944894480.

The previous prime is 231230402213. The next prime is 231230402251. The reversal of 231230402225 is 522204032132.

It is not a de Polignac number, because 231230402225 - 2⁴ = 231230402209 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231230402194 and 231230402203.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 865757 + ... + 1100906.

It is an arithmetic number, because the mean of its divisors is an integer number (23898900928).

Almost surely, 2^231230402225 is an apocalyptic number.

231230402225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

231230402225 is a deficient number, since it is larger than the sum of its proper divisors (55556408911).

231230402225 is a wasteful number, since it uses less digits than its factorization.

231230402225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1971376 (or 1971371 counting only the distinct ones).

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

Adding to 231230402225 its reverse (522204032132), we get a palindrome (753434434357).

The spelling of 231230402225 in words is "two hundred thirty-one billion, two hundred thirty million, four hundred two thousand, two hundred twenty-five".