65242631 has 4 divisors (see below), whose sum is σ = 67347264. Its totient is φ = 63138000.

The previous prime is 65242609. The next prime is 65242679. The reversal of 65242631 is 13624256.

65242631 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 65242631 - 2¹⁰ = 65241607 is a prime.

It is a super-2 number, since 2×65242631² = 8513201799604322, which contains 22 as substring.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 65242594 and 65242603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65242031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1052270 + ... + 1052331.

It is an arithmetic number, because the mean of its divisors is an integer number (16836816).

Almost surely, 2^65242631 is an apocalyptic number.

65242631 is a deficient number, since it is larger than the sum of its proper divisors (2104633).

65242631 is a wasteful number, since it uses less digits than its factorization.

65242631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2104632.

The product of its digits is 8640, while the sum is 29.

The square root of 65242631 is about 8077.2910681738. The cubic root of 65242631 is about 402.5722381050.

Adding to 65242631 its reverse (13624256), we get a palindrome (78866887).

The spelling of 65242631 in words is "sixty-five million, two hundred forty-two thousand, six hundred thirty-one".