2187072423 has 24 divisors (see below), whose sum is σ = 3356419248. Its totient is φ = 1367569152.

The previous prime is 2187072409. The next prime is 2187072449. The reversal of 2187072423 is 3242707812.

It is not a de Polignac number, because 2187072423 - 2⁶ = 2187072359 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2187072623) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20436 + ... + 69222.

It is an arithmetic number, because the mean of its divisors is an integer number (139850802).

Almost surely, 2^2187072423 is an apocalyptic number.

2187072423 is a deficient number, since it is larger than the sum of its proper divisors (1169346825).

2187072423 is a wasteful number, since it uses less digits than its factorization.

2187072423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49103 (or 49100 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 36.

The square root of 2187072423 is about 46766.1461208854. The cubic root of 2187072423 is about 1298.0389412448.

The spelling of 2187072423 in words is "two billion, one hundred eighty-seven million, seventy-two thousand, four hundred twenty-three".