231420310225 has 48 divisors (see below), whose sum is σ = 328071002112. Its totient is φ = 160420930560.

The previous prime is 231420310217. The next prime is 231420310229. The reversal of 231420310225 is 522013024132.

It is not a de Polignac number, because 231420310225 - 2³ = 231420310217 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 231420310225.

It is not an unprimeable number, because it can be changed into a prime (231420310229) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2061394 + ... + 2170756.

It is an arithmetic number, because the mean of its divisors is an integer number (6834812544).

Almost surely, 2^231420310225 is an apocalyptic number.

231420310225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

231420310225 is a deficient number, since it is larger than the sum of its proper divisors (96650691887).

231420310225 is a wasteful number, since it uses less digits than its factorization.

231420310225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109786 (or 109781 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

Adding to 231420310225 its reverse (522013024132), we get a palindrome (753433334357).

The spelling of 231420310225 in words is "two hundred thirty-one billion, four hundred twenty million, three hundred ten thousand, two hundred twenty-five".