2122031523 has 4 divisors (see below), whose sum is σ = 2829375368. Its totient is φ = 1414687680.

The previous prime is 2122031519. The next prime is 2122031531. The reversal of 2122031523 is 3251302212.

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

It is not a de Polignac number, because 2122031523 - 2² = 2122031519 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2122031523.

It is not an unprimeable number, because it can be changed into a prime (2122031533) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 353671918 + ... + 353671923.

It is an arithmetic number, because the mean of its divisors is an integer number (707343842).

Almost surely, 2^2122031523 is an apocalyptic number.

2122031523 is a deficient number, since it is larger than the sum of its proper divisors (707343845).

2122031523 is an equidigital number, since it uses as much as digits as its factorization.

2122031523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 707343844.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 2122031523 is about 46065.5133804020. The cubic root of 2122031523 is about 1285.0418661384.

Adding to 2122031523 its reverse (3251302212), we get a palindrome (5373333735).

The spelling of 2122031523 in words is "two billion, one hundred twenty-two million, thirty-one thousand, five hundred twenty-three".