125631371 has 4 divisors (see below), whose sum is σ = 125655192. Its totient is φ = 125607552.

The previous prime is 125631367. The next prime is 125631379. The reversal of 125631371 is 173136521.

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 125631371 - 2² = 125631367 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125631379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86 + ... + 15851.

It is an arithmetic number, because the mean of its divisors is an integer number (31413798).

Almost surely, 2^125631371 is an apocalyptic number.

125631371 is a deficient number, since it is larger than the sum of its proper divisors (23821).

125631371 is an equidigital number, since it uses as much as digits as its factorization.

125631371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23820.

The product of its digits is 3780, while the sum is 29.

The square root of 125631371 is about 11208.5400922689. The cubic root of 125631371 is about 500.8404146151.

Adding to 125631371 its reverse (173136521), we get a palindrome (298767892).

The spelling of 125631371 in words is "one hundred twenty-five million, six hundred thirty-one thousand, three hundred seventy-one".