154120231 has 4 divisors (see below), whose sum is σ = 156071200. Its totient is φ = 152169264.

The previous prime is 154120201. The next prime is 154120259. The reversal of 154120231 is 132021451.

154120231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 132021451 = 8731 ⋅15121.

It is a cyclic number.

It is not a de Polignac number, because 154120231 - 2⁷ = 154120103 is a prime.

It is a super-2 number, since 2×154120231² = 47506091206986722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 154120199 and 154120208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (154120201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 975366 + ... + 975523.

It is an arithmetic number, because the mean of its divisors is an integer number (39017800).

Almost surely, 2^154120231 is an apocalyptic number.

154120231 is a deficient number, since it is larger than the sum of its proper divisors (1950969).

154120231 is an equidigital number, since it uses as much as digits as its factorization.

154120231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1950968.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 154120231 is about 12414.5169458985. The cubic root of 154120231 is about 536.1502964115.

Adding to 154120231 its reverse (132021451), we get a palindrome (286141682).

The spelling of 154120231 in words is "one hundred fifty-four million, one hundred twenty thousand, two hundred thirty-one".