231649265 has 16 divisors (see below), whose sum is σ = 283542336. Its totient is φ = 181646400.

The previous prime is 231649241. The next prime is 231649309. The reversal of 231649265 is 562946132.

It is not a de Polignac number, because 231649265 - 2²⁶ = 164540401 is a prime.

It is a super-2 number, since 2×231649265² = 107322763950080450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52235 + ... + 56495.

It is an arithmetic number, because the mean of its divisors is an integer number (17721396).

Almost surely, 2^231649265 is an apocalyptic number.

It is an amenable number.

231649265 is a deficient number, since it is larger than the sum of its proper divisors (51893071).

231649265 is a wasteful number, since it uses less digits than its factorization.

231649265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4480.

The product of its digits is 77760, while the sum is 38.

The square root of 231649265 is about 15220.0284165306. The cubic root of 231649265 is about 614.1535626897.

The spelling of 231649265 in words is "two hundred thirty-one million, six hundred forty-nine thousand, two hundred sixty-five".