125321231 has 4 divisors (see below), whose sum is σ = 143224272. Its totient is φ = 107418192.

The previous prime is 125321219. The next prime is 125321291. The reversal of 125321231 is 132123521.

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

It is not a de Polignac number, because 125321231 - 2¹⁰ = 125320207 is a prime.

It is a super-2 number, since 2×125321231² = 31410821878710722, 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 (125321291) 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, 8951510 + ... + 8951523.

It is an arithmetic number, because the mean of its divisors is an integer number (35806068).

Almost surely, 2^125321231 is an apocalyptic number.

125321231 is a deficient number, since it is larger than the sum of its proper divisors (17903041).

125321231 is an equidigital number, since it uses as much as digits as its factorization.

125321231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17903040.

The product of its digits is 360, while the sum is 20.

The square root of 125321231 is about 11194.6965568523. The cubic root of 125321231 is about 500.4279416274.

Adding to 125321231 its reverse (132123521), we get a palindrome (257444752).

The spelling of 125321231 in words is "one hundred twenty-five million, three hundred twenty-one thousand, two hundred thirty-one".