2123113240 has 32 divisors (see below), whose sum is σ = 4784852880. Its totient is φ = 847850112.

The previous prime is 2123113217. The next prime is 2123113247. The reversal of 2123113240 is 423113212.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2123113247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18774 + ... + 67813.

Almost surely, 2^2123113240 is an apocalyptic number.

2123113240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2123113240 is an abundant number, since it is smaller than the sum of its proper divisors (2661739640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2123113240 is a wasteful number, since it uses less digits than its factorization.

2123113240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87211 (or 87207 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 2123113240 is about 46077.2529563124. The cubic root of 2123113240 is about 1285.2601813847.

Adding to 2123113240 its reverse (423113212), we get a palindrome (2546226452).

The spelling of 2123113240 in words is "two billion, one hundred twenty-three million, one hundred thirteen thousand, two hundred forty".