2331021401 has 4 divisors (see below), whose sum is σ = 2331266100. Its totient is φ = 2330776704.

The previous prime is 2331021389. The next prime is 2331021437. The reversal of 2331021401 is 1041201332.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 473497600 + 1857523801 = 21760^2 + 43099^2 .

It is a cyclic number.

It is not a de Polignac number, because 2331021401 - 2³⁰ = 1257279577 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2331021401.

It is not an unprimeable number, because it can be changed into a prime (2331021481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 107456 + ... + 127313.

It is an arithmetic number, because the mean of its divisors is an integer number (582816525).

Almost surely, 2^2331021401 is an apocalyptic number.

It is an amenable number.

2331021401 is a deficient number, since it is larger than the sum of its proper divisors (244699).

2331021401 is an equidigital number, since it uses as much as digits as its factorization.

2331021401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244698.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 2331021401 is about 48280.6524500239. The cubic root of 2331021401 is about 1325.9141954416.

Adding to 2331021401 its reverse (1041201332), we get a palindrome (3372222733).

The spelling of 2331021401 in words is "two billion, three hundred thirty-one million, twenty-one thousand, four hundred one".