153240231 has 4 divisors (see below), whose sum is σ = 204320312. Its totient is φ = 102160152.

The previous prime is 153240203. The next prime is 153240251. The reversal of 153240231 is 132042351.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 153240231 - 2⁷ = 153240103 is a prime.

It is a super-2 number, since 2×153240231² = 46965136793866722, 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 = 153240198 and 153240207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (153240251) 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 3 ways as a sum of consecutive naturals, for example, 25540036 + ... + 25540041.

It is an arithmetic number, because the mean of its divisors is an integer number (51080078).

Almost surely, 2^153240231 is an apocalyptic number.

153240231 is a deficient number, since it is larger than the sum of its proper divisors (51080081).

153240231 is an equidigital number, since it uses as much as digits as its factorization.

153240231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51080080.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 153240231 is about 12379.0238306581. The cubic root of 153240231 is about 535.1279060648.

Adding to 153240231 its reverse (132042351), we get a palindrome (285282582).

The spelling of 153240231 in words is "one hundred fifty-three million, two hundred forty thousand, two hundred thirty-one".