2123030311 has 4 divisors (see below), whose sum is σ = 2152112992. Its totient is φ = 2093947632.

The previous prime is 2123030291. The next prime is 2123030317. The reversal of 2123030311 is 1130303212.

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 2123030311 - 2¹⁷ = 2122899239 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 (2123030317) 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, 14541231 + ... + 14541376.

It is an arithmetic number, because the mean of its divisors is an integer number (538028248).

Almost surely, 2^2123030311 is an apocalyptic number.

2123030311 is a deficient number, since it is larger than the sum of its proper divisors (29082681).

2123030311 is an equidigital number, since it uses as much as digits as its factorization.

2123030311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29082680.

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

The square root of 2123030311 is about 46076.3530566385. The cubic root of 2123030311 is about 1285.2434470395.

Adding to 2123030311 its reverse (1130303212), we get a palindrome (3253333523).

The spelling of 2123030311 in words is "two billion, one hundred twenty-three million, thirty thousand, three hundred eleven".