65131244 has 12 divisors (see below), whose sum is σ = 114048984. Its totient is φ = 32545824.

The previous prime is 65131243. The next prime is 65131249. The reversal of 65131244 is 44213156.

It is not an unprimeable number, because it can be changed into a prime (65131243) 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, 4424 + ... + 12240.

It is an arithmetic number, because the mean of its divisors is an integer number (9504082).

Almost surely, 2^65131244 is an apocalyptic number.

It is an amenable number.

65131244 is a deficient number, since it is larger than the sum of its proper divisors (48917740).

65131244 is a wasteful number, since it uses less digits than its factorization.

65131244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9904 (or 9902 counting only the distinct ones).

The product of its digits is 2880, while the sum is 26.

The square root of 65131244 is about 8070.3930511469. The cubic root of 65131244 is about 402.3430073284.

The spelling of 65131244 in words is "sixty-five million, one hundred thirty-one thousand, two hundred forty-four".