65123101 has 4 divisors (see below), whose sum is σ = 65257312. Its totient is φ = 64988892.

The previous prime is 65123099. The next prime is 65123137. The reversal of 65123101 is 10132156.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 65123101 - 2¹ = 65123099 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65123161) 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, 66375 + ... + 67348.

It is an arithmetic number, because the mean of its divisors is an integer number (16314328).

Almost surely, 2^65123101 is an apocalyptic number.

It is an amenable number.

65123101 is a deficient number, since it is larger than the sum of its proper divisors (134211).

65123101 is a wasteful number, since it uses less digits than its factorization.

65123101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134210.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 65123101 is about 8069.8885370245. Note that the first 3 decimals coincide. The cubic root of 65123101 is about 402.3262390543.

Adding to 65123101 its reverse (10132156), we get a palindrome (75255257).

The spelling of 65123101 in words is "sixty-five million, one hundred twenty-three thousand, one hundred one".