2123001331 has 4 divisors (see below), whose sum is σ = 2316001464. Its totient is φ = 1930001200.

The previous prime is 2123001323. The next prime is 2123001359. The reversal of 2123001331 is 1331003212.

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

It is a cyclic number.

It is not a de Polignac number, because 2123001331 - 2³ = 2123001323 is a prime.

It is a super-2 number, since 2×2123001331² = 9014269302855543122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2123001301) 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, 96500050 + ... + 96500071.

It is an arithmetic number, because the mean of its divisors is an integer number (579000366).

Almost surely, 2^2123001331 is an apocalyptic number.

2123001331 is a deficient number, since it is larger than the sum of its proper divisors (193000133).

2123001331 is a wasteful number, since it uses less digits than its factorization.

2123001331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193000132.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 2123001331 is about 46076.0385775513. The cubic root of 2123001331 is about 1285.2375990268.

Adding to 2123001331 its reverse (1331003212), we get a palindrome (3454004543).

The spelling of 2123001331 in words is "two billion, one hundred twenty-three million, one thousand, three hundred thirty-one".