2154312423 has 16 divisors (see below), whose sum is σ = 3215942400. Its totient is φ = 1425242520.

The previous prime is 2154312379. The next prime is 2154312451. The reversal of 2154312423 is 3242134512.

It is a de Polignac number, because none of the positive numbers 2^k-2154312423 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2154312023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 301003 + ... + 308076.

It is an arithmetic number, because the mean of its divisors is an integer number (200996400).

Almost surely, 2^2154312423 is an apocalyptic number.

2154312423 is a deficient number, since it is larger than the sum of its proper divisors (1061629977).

2154312423 is a wasteful number, since it uses less digits than its factorization.

2154312423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 609219 (or 609213 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 2154312423 is about 46414.5712357660. The cubic root of 2154312423 is about 1291.5252321660.

Adding to 2154312423 its reverse (3242134512), we get a palindrome (5396446935).

The spelling of 2154312423 in words is "two billion, one hundred fifty-four million, three hundred twelve thousand, four hundred twenty-three".