65224131 has 16 divisors (see below), whose sum is σ = 104620800. Its totient is φ = 35309088.

The previous prime is 65224129. The next prime is 65224141. The reversal of 65224131 is 13142256.

It is not a de Polignac number, because 65224131 - 2¹ = 65224129 is a prime.

It is a super-2 number, since 2×65224131² = 8508374529410322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (65224141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81336 + ... + 82133.

It is an arithmetic number, because the mean of its divisors is an integer number (6538800).

Almost surely, 2^65224131 is an apocalyptic number.

65224131 is a deficient number, since it is larger than the sum of its proper divisors (39396669).

65224131 is a wasteful number, since it uses less digits than its factorization.

65224131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163498.

The product of its digits is 1440, while the sum is 24.

The square root of 65224131 is about 8076.1458010613. The cubic root of 65224131 is about 402.5341837922.

Adding to 65224131 its reverse (13142256), we get a palindrome (78366387).

The spelling of 65224131 in words is "sixty-five million, two hundred twenty-four thousand, one hundred thirty-one".