231622325 has 24 divisors (see below), whose sum is σ = 320979456. Its totient is φ = 164336000.

The previous prime is 231622319. The next prime is 231622337. The reversal of 231622325 is 523226132.

It is not a de Polignac number, because 231622325 - 2¹² = 231618229 is a prime.

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 231622294 and 231622303.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1004 + ... + 21546.

It is an arithmetic number, because the mean of its divisors is an integer number (13374144).

Almost surely, 2^231622325 is an apocalyptic number.

231622325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

231622325 is a deficient number, since it is larger than the sum of its proper divisors (89357131).

231622325 is a wasteful number, since it uses less digits than its factorization.

231622325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20605 (or 20600 counting only the distinct ones).

The product of its digits is 4320, while the sum is 26.

The square root of 231622325 is about 15219.1433727395. The cubic root of 231622325 is about 614.1297537956.

Adding to 231622325 its reverse (523226132), we get a palindrome (754848457).

The spelling of 231622325 in words is "two hundred thirty-one million, six hundred twenty-two thousand, three hundred twenty-five".