231614225 has 12 divisors (see below), whose sum is σ = 287435100. Its totient is φ = 185140800.

The previous prime is 231614221. The next prime is 231614231. The reversal of 231614225 is 522416132.

It is a happy number.

231614225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 60109009 + 171505216 = 7753^2 + 13096^2 .

It is not a de Polignac number, because 231614225 - 2² = 231614221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 231614194 and 231614203.

It is not an unprimeable number, because it can be changed into a prime (231614221) 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, 35735 + ... + 41715.

It is an arithmetic number, because the mean of its divisors is an integer number (23952925).

Almost surely, 2^231614225 is an apocalyptic number.

231614225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

231614225 is a deficient number, since it is larger than the sum of its proper divisors (55820875).

231614225 is a wasteful number, since it uses less digits than its factorization.

231614225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7540 (or 7535 counting only the distinct ones).

The product of its digits is 2880, while the sum is 26.

The square root of 231614225 is about 15218.8772581948. The cubic root of 231614225 is about 614.1225948585.

The spelling of 231614225 in words is "two hundred thirty-one million, six hundred fourteen thousand, two hundred twenty-five".