154231321 has 8 divisors (see below), whose sum is σ = 155507040. Its totient is φ = 152961312.

The previous prime is 154231267. The next prime is 154231333. The reversal of 154231321 is 123132451.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 154231321 - 2¹³ = 154223129 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 154231292 and 154231301.

It is not an unprimeable number, because it can be changed into a prime (154231421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64770 + ... + 67108.

It is an arithmetic number, because the mean of its divisors is an integer number (19438380).

Almost surely, 2^154231321 is an apocalyptic number.

It is an amenable number.

154231321 is a deficient number, since it is larger than the sum of its proper divisors (1275719).

154231321 is a wasteful number, since it uses less digits than its factorization.

154231321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2855.

The product of its digits is 720, while the sum is 22.

The square root of 154231321 is about 12418.9903373825. The cubic root of 154231321 is about 536.2790846768.

Adding to 154231321 its reverse (123132451), we get a palindrome (277363772).

The spelling of 154231321 in words is "one hundred fifty-four million, two hundred thirty-one thousand, three hundred twenty-one".