2154151323 has 6 divisors (see below), whose sum is σ = 3111551924. Its totient is φ = 1436100876.

The previous prime is 2154151271. The next prime is 2154151333. The reversal of 2154151323 is 3231514512.

2154151323 is a `hidden beast` number, since 215 + 415 + 1 + 32 + 3 = 666.

2154151323 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2154151323 - 2⁸ = 2154151067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2154151333) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 119675065 + ... + 119675082.

Almost surely, 2^2154151323 is an apocalyptic number.

2154151323 is a deficient number, since it is larger than the sum of its proper divisors (957400601).

2154151323 is a wasteful number, since it uses less digits than its factorization.

2154151323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239350153 (or 239350150 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 2154151323 is about 46412.8357569326. The cubic root of 2154151323 is about 1291.4930378412.

Adding to 2154151323 its reverse (3231514512), we get a palindrome (5385665835).

The spelling of 2154151323 in words is "two billion, one hundred fifty-four million, one hundred fifty-one thousand, three hundred twenty-three".