2130723 has 24 divisors (see below), whose sum is σ = 3634176. Its totient is φ = 1177200.

The previous prime is 2130721. The next prime is 2130727. The reversal of 2130723 is 3270312.

It is not a de Polignac number, because 2130723 - 2¹ = 2130721 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2130696 and 2130705.

It is not an unprimeable number, because it can be changed into a prime (2130721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1408 + ... + 2498.

It is an arithmetic number, because the mean of its divisors is an integer number (151424).

2^2130723 is an apocalyptic number.

2130723 is a deficient number, since it is larger than the sum of its proper divisors (1503453).

2130723 is a wasteful number, since it uses less digits than its factorization.

2130723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1135 (or 1132 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 18.

The square root of 2130723 is about 1459.6996266356. The cubic root of 2130723 is about 128.6793913278.

The spelling of 2130723 in words is "two million, one hundred thirty thousand, seven hundred twenty-three".