153031231 has 4 divisors (see below), whose sum is σ = 158308200. Its totient is φ = 147754264.

The previous prime is 153031189. The next prime is 153031243. The reversal of 153031231 is 132130351.

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

It is a cyclic number.

It is not a de Polignac number, because 153031231 - 2⁷ = 153031103 is a prime.

It is a super-2 number, since 2×153031231² = 46837115322750722, 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 = 153031199 and 153031208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (153031271) 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, 2638441 + ... + 2638498.

It is an arithmetic number, because the mean of its divisors is an integer number (39577050).

Almost surely, 2^153031231 is an apocalyptic number.

153031231 is a deficient number, since it is larger than the sum of its proper divisors (5276969).

153031231 is an equidigital number, since it uses as much as digits as its factorization.

153031231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5276968.

The product of its (nonzero) digits is 270, while the sum is 19.

The square root of 153031231 is about 12370.5792507869. The cubic root of 153031231 is about 534.8845134602.

Adding to 153031231 its reverse (132130351), we get a palindrome (285161582).

It can be divided in two parts, 1530 and 31231, that added together give a square (32761 = 181²).

The spelling of 153031231 in words is "one hundred fifty-three million, thirty-one thousand, two hundred thirty-one".