2123351445 has 16 divisors (see below), whose sum is σ = 3401490240. Its totient is φ = 1131078144.

The previous prime is 2123351431. The next prime is 2123351497. The reversal of 2123351445 is 5441533212.

It is not a de Polignac number, because 2123351445 - 2¹⁵ = 2123318677 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73180 + ... + 97989.

It is an arithmetic number, because the mean of its divisors is an integer number (212593140).

Almost surely, 2^2123351445 is an apocalyptic number.

It is an amenable number.

2123351445 is a deficient number, since it is larger than the sum of its proper divisors (1278138795).

2123351445 is a wasteful number, since it uses less digits than its factorization.

2123351445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172004.

The product of its digits is 14400, while the sum is 30.

The square root of 2123351445 is about 46079.8377275789. The cubic root of 2123351445 is about 1285.3082466419.

Adding to 2123351445 its reverse (5441533212), we get a palindrome (7564884657).

The spelling of 2123351445 in words is "two billion, one hundred twenty-three million, three hundred fifty-one thousand, four hundred forty-five".