154313231 has 4 divisors (see below), whose sum is σ = 162435000. Its totient is φ = 146191464.

The previous prime is 154313207. The next prime is 154313249. The reversal of 154313231 is 132313451.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 132313451 = 43 ⋅3077057.

It is a cyclic number.

It is not a de Polignac number, because 154313231 - 2¹⁴ = 154296847 is a prime.

It is a super-2 number, since 2×154313231² = 47625146523318722, 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 = 154313197 and 154313206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (154313531) 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, 4060856 + ... + 4060893.

It is an arithmetic number, because the mean of its divisors is an integer number (40608750).

Almost surely, 2^154313231 is an apocalyptic number.

154313231 is a deficient number, since it is larger than the sum of its proper divisors (8121769).

154313231 is an equidigital number, since it uses as much as digits as its factorization.

154313231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8121768.

The product of its digits is 1080, while the sum is 23.

The square root of 154313231 is about 12422.2876717616. The cubic root of 154313231 is about 536.3740045361.

Adding to 154313231 its reverse (132313451), we get a palindrome (286626682).

The spelling of 154313231 in words is "one hundred fifty-four million, three hundred thirteen thousand, two hundred thirty-one".