2321901 has 6 divisors (see below), whose sum is σ = 3353870. Its totient is φ = 1547928.

The previous prime is 2321899. The next prime is 2321909. The reversal of 2321901 is 1091232.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1565001 + 756900 = 1251^2 + 870^2 .

It is not a de Polignac number, because 2321901 - 2¹ = 2321899 is a prime.

It is a Duffinian number.

It is a zygodrome in base 3.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2321909) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 128986 + ... + 129003.

2^2321901 is an apocalyptic number.

It is an amenable number.

2321901 is a deficient number, since it is larger than the sum of its proper divisors (1031969).

2321901 is a wasteful number, since it uses less digits than its factorization.

2321901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257995 (or 257992 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 2321901 is about 1523.7785272145. The cubic root of 2321901 is about 132.4182669064.

The spelling of 2321901 in words is "two million, three hundred twenty-one thousand, nine hundred one".