65270231 has 4 divisors (see below), whose sum is σ = 70291032. Its totient is φ = 60249432.

The previous prime is 65270207. The next prime is 65270299. The reversal of 65270231 is 13207256.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 65270231 - 2¹⁸ = 65008087 is a prime.

It is a super-2 number, since 2×65270231² = 8520406109586722, which contains 22 as substring.

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 65270231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65270201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2510381 + ... + 2510406.

It is an arithmetic number, because the mean of its divisors is an integer number (17572758).

Almost surely, 2^65270231 is an apocalyptic number.

65270231 is a deficient number, since it is larger than the sum of its proper divisors (5020801).

65270231 is a wasteful number, since it uses less digits than its factorization.

65270231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5020800.

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 65270231 is about 8078.9993811115. Note that the first 3 decimals coincide. The cubic root of 65270231 is about 402.6289976561.

Adding to 65270231 its reverse (13207256), we get a palindrome (78477487).

The spelling of 65270231 in words is "sixty-five million, two hundred seventy thousand, two hundred thirty-one".