2123440353 has 20 divisors (see below), whose sum is σ = 3174310128. Its totient is φ = 1414619640.

The previous prime is 2123440343. The next prime is 2123440357. The reversal of 2123440353 is 3530443212.

2123440353 is a `hidden beast` number, since 21 + 234 + 403 + 5 + 3 = 666.

It is not a de Polignac number, because 2123440353 - 2⁴ = 2123440337 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (2123440357) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 115450 + ... + 132572.

Almost surely, 2^2123440353 is an apocalyptic number.

It is an amenable number.

2123440353 is a deficient number, since it is larger than the sum of its proper divisors (1050869775).

2123440353 is a wasteful number, since it uses less digits than its factorization.

2123440353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18666 (or 18657 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 27.

The square root of 2123440353 is about 46080.8024344195. The cubic root of 2123440353 is about 1285.3261856711.

Adding to 2123440353 its reverse (3530443212), we get a palindrome (5653883565).

The spelling of 2123440353 in words is "two billion, one hundred twenty-three million, four hundred forty thousand, three hundred fifty-three".