65131436 has 6 divisors (see below), whose sum is σ = 113980020. Its totient is φ = 32565716.

The previous prime is 65131421. The next prime is 65131439. The reversal of 65131436 is 63413156.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 65131399 and 65131408.

It is not an unprimeable number, because it can be changed into a prime (65131439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8141426 + ... + 8141433.

It is an arithmetic number, because the mean of its divisors is an integer number (18996670).

Almost surely, 2^65131436 is an apocalyptic number.

It is an amenable number.

65131436 is a deficient number, since it is larger than the sum of its proper divisors (48848584).

65131436 is a wasteful number, since it uses less digits than its factorization.

65131436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16282863 (or 16282861 counting only the distinct ones).

The product of its digits is 6480, while the sum is 29.

The square root of 65131436 is about 8070.4049464695. The cubic root of 65131436 is about 402.3434026828.

The spelling of 65131436 in words is "sixty-five million, one hundred thirty-one thousand, four hundred thirty-six".