65043131 has 4 divisors (see below), whose sum is σ = 66013992. Its totient is φ = 64072272.

The previous prime is 65043127. The next prime is 65043157. The reversal of 65043131 is 13134056.

It is a happy number.

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 65043131 - 2² = 65043127 is a prime.

It is a super-2 number, since 2×65043131² = 8461217780566322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 65043097 and 65043106.

It is not an unprimeable number, because it can be changed into a prime (65043191) 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, 485330 + ... + 485463.

It is an arithmetic number, because the mean of its divisors is an integer number (16503498).

Almost surely, 2^65043131 is an apocalyptic number.

65043131 is a deficient number, since it is larger than the sum of its proper divisors (970861).

65043131 is an equidigital number, since it uses as much as digits as its factorization.

65043131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 970860.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 65043131 is about 8064.9321757842. The cubic root of 65043131 is about 402.1614884638.

Adding to 65043131 its reverse (13134056), we get a palindrome (78177187).

The spelling of 65043131 in words is "sixty-five million, forty-three thousand, one hundred thirty-one".