65203313 has 24 divisors (see below), whose sum is σ = 80045952. Its totient is φ = 52015104.

The previous prime is 65203309. The next prime is 65203349. The reversal of 65203313 is 31330256.

It is not a de Polignac number, because 65203313 - 2² = 65203309 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65203363) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 337745 + ... + 337937.

It is an arithmetic number, because the mean of its divisors is an integer number (3335248).

Almost surely, 2^65203313 is an apocalyptic number.

It is an amenable number.

65203313 is a deficient number, since it is larger than the sum of its proper divisors (14842639).

65203313 is a wasteful number, since it uses less digits than its factorization.

65203313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401 (or 384 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 23.

The square root of 65203313 is about 8074.8568408363. The cubic root of 65203313 is about 402.4913527713.

Adding to 65203313 its reverse (31330256), we get a palindrome (96533569).

The spelling of 65203313 in words is "sixty-five million, two hundred three thousand, three hundred thirteen".