125143231 has 4 divisors (see below), whose sum is σ = 125303032. Its totient is φ = 124983432.

The previous prime is 125143223. The next prime is 125143237. The reversal of 125143231 is 132341521.

It is a happy number.

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 125143231 - 2³ = 125143223 is a prime.

It is a super-2 number, since 2×125143231² = 31321656530238722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125143237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78720 + ... + 80293.

It is an arithmetic number, because the mean of its divisors is an integer number (31325758).

Almost surely, 2^125143231 is an apocalyptic number.

125143231 is a deficient number, since it is larger than the sum of its proper divisors (159801).

125143231 is an equidigital number, since it uses as much as digits as its factorization.

125143231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159800.

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

The square root of 125143231 is about 11186.7435386711. The cubic root of 125143231 is about 500.1909017704.

Adding to 125143231 its reverse (132341521), we get a palindrome (257484752).

The spelling of 125143231 in words is "one hundred twenty-five million, one hundred forty-three thousand, two hundred thirty-one".