125312231 has 16 divisors (see below), whose sum is σ = 139366656. Its totient is φ = 111720000.

The previous prime is 125312227. The next prime is 125312251. The reversal of 125312231 is 132213521.

It is a cyclic number.

It is not a de Polignac number, because 125312231 - 2² = 125312227 is a prime.

It is a super-2 number, since 2×125312231² = 31406310476394722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125312251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 219176 + ... + 219746.

It is an arithmetic number, because the mean of its divisors is an integer number (8710416).

Almost surely, 2^125312231 is an apocalyptic number.

125312231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

125312231 is a deficient number, since it is larger than the sum of its proper divisors (14054425).

125312231 is a wasteful number, since it uses less digits than its factorization.

125312231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 934.

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

The square root of 125312231 is about 11194.2945735763. The cubic root of 125312231 is about 500.4159618555.

Adding to 125312231 its reverse (132213521), we get a palindrome (257525752).

The spelling of 125312231 in words is "one hundred twenty-five million, three hundred twelve thousand, two hundred thirty-one".