231053225 has 12 divisors (see below), whose sum is σ = 308545356. Its totient is φ = 170623680.

The previous prime is 231053219. The next prime is 231053227. The reversal of 231053225 is 522350132.

It can be written as a sum of positive squares in 6 ways, for example, as 61089856 + 169963369 = 7816^2 + 13037^2 .

It is not a de Polignac number, because 231053225 - 2⁶ = 231053161 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 231053225.

It is not an unprimeable number, because it can be changed into a prime (231053227) 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, 355142 + ... + 355791.

It is an arithmetic number, because the mean of its divisors is an integer number (25712113).

Almost surely, 2^231053225 is an apocalyptic number.

231053225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

231053225 is a deficient number, since it is larger than the sum of its proper divisors (77492131).

231053225 is a wasteful number, since it uses less digits than its factorization.

231053225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 710956 (or 710951 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 231053225 is about 15200.4350266695. The cubic root of 231053225 is about 613.6263655352.

The spelling of 231053225 in words is "two hundred thirty-one million, fifty-three thousand, two hundred twenty-five".